TCAG’s MPO (Metropolitan Planning Organization) and COG (Council of Governments) Acronyms



AASHTO American Association of State Highway and Transportation Officials
ADA Americans with Disabilities Act
ADT Average Daily Traffic
ATP Active Transportation Plan
ALUC Airport Land Use Commission
AMPO Assoc. of Metropolitan Planning Organizations
APTA American Public Transit Assoc.
ARB Air Resources Board
BRT Bus Rapid Transit
BTA Bicycle Transportation Account
CAA Clean Air Act
CAAA Clean Air Act Amendment of 1990
CALCOG Calif. Assoc.Councils of Govts.
CALTRANS California Dept. Of Transportation
CALUP Comprehensive Airport Land Use Plan
CARB California Air Resource Board
CCAA California Clean Air Act of 1988
CEQA California Environmental Quality Act of 1970
CFPG Cal. Federal Programming Group
CHP California Highway Patrol
CIP Capital Improvement Program
CMAQ Congestion Mitigation and Air
Quality program
CMP Congestion Management Process
CNG Compressed Natural Gas
COG Council of Governments
CSMP Congestion System Management Plan
CTA California Transit Association
CTC California Transportation Commission
DOT Department Of Transportation
EIR Environmental Impact Report
EMFAC Emissions Factors (model)
EPSP Expedited Project Selection Procedures
FCAA Federal Clean Air Act
FHWA Federal Highway Administration
FTA Federal Transit Administration
FTIP Federal Transportation
Improvement Program
HOV High Occupancy Vehicle
HOT High Occupancy Toll
HSRA High Speed Rail Authority
IRRS Interregional Road System
ITIP Interregional Transportation Improvement Program
ITS Intelligent Transportation Systems
ITS Institute of Transportation Studies, University of California
JARC Job Access Reverse Commute
LAFCo Local Agency Formation Commission
LNG Liquefied Natural Gas
LOS Level of Service
LRT Light Rail Transit
LRTP Long Range Transit Plan
LTC Local Transportation Commission
LTF Local Transportation Fund
MPO Metropolitan Planning Organization
NAAQS National Ambient Air Quality Standards
NARC National Association of Regional Councils
NEPA National Environmental Policy Act
NHS National Highway System
OWP Overall Work Program
PAC Policy Advisory Committee
PID Project Initiation Document
PMS Pavement Management System
PPP Public Participation Plan
PSR Project Study Report
ROG Reactive Organic Gases
RTIP Regional Transportation
Improvement Program
RTP Regional Transportation Plan
RTPA Regional Transportation Planning Agency
SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act-Legacy for Users
SCS Sustainable Communities Strategy
SHOPP State Highway Operation & Protection Plan
SIP State Implementation Plan
SOV Single Occupancy Vehicle
SRTP Short Range Transit Plan
SSTAC Social Service Transportation
Advisory Council
STAF State Transit Assistance Fund
STIP State Transportation Improvement
STP Surface Transportation Program
SJVAPCD San Joaquin Valley Air Pollution Control District
TAC Technical Advisory Committee
TAZ Traffic Analysis Zone
TCAG Tulare County Association of Governments
TCM Transportation Control Measure
TCR Transportation Concept Report
TCTA Tulare County Transportation Authority
TDA Transportation Development Act
TDM Transportation Demand
TDP Transit Development Plan
TEA Transportation Enhancement Activities
TIF Transportation Impact Fee
TIP Transportation Improvement Program
TMA Transportation Management Area
TOD Transit Oriented Development

TPA Transportation Planning




Acronyms have become an increasingly prevalent part of western culture. They are used in almost all occupations as a form of communications shorthand.  This list is an attempt to identify and explain those acronyms in common usage among transportation professionals in California.


The list was compiled by a former Caltrans employee with some additions from TCAG in bold over a number of years and is not an official Caltrans document nor an official TCAG document.  It is offered as an informational tool.  Its presence on this website does not constitute advocacy or requirement of usage.  If you have comments, questions or additions, please contact the Division of Local Assistance Training Coordinator and




3C                            Continuing, Cooperative and Comprehensive planning                                                           

3E                            Education, Enforcement & Encouragement (SR2S)

3R                            Resurfacing, Restoration & Rehabilitation work

4R                            All of the above, plus Reconstruction

404                          ACOE permit for waterway dredging or filling


gAA                         Affirmative Action

AAEE                      American Academy of Environmental Engineers

AA/EO                     Affirmative Action and Equal Opportunity

AAMAS                   Asphalt Aggregate Mixture Analysis System

AAP                         Arterial Analysis Package

AAR                        Agency Action Request

AARP                      American Association of Retired Persons

AASHTO                 American Assoc. of State Highway Officials

AADT                      Average Annual Daily Traffic (two way)

AADTT                   Average Annual Daily Truck Traffic

AB                           Aggregate Base

AB69                       Created RTPAs

AB140                     1988, Deddeh Act, revised the STIP process

AB402                     1977, Alquist/Ingalls Act, California Transportation Reform Act,

set up the STIP process & CTC

AB 872                    1999: Authorizes local agencies to spend Fed & State matching funds in current STIP for eligible work prior to allocation by CTC.

AB1012                   1999: Main intent to reduce large cash balance in State Highway Account by accelerating project delivery. Contains use it or lose it language whereby funds not obligated within three years of allocation lapse and are distributed to other projects.

AB1475                   SR2S established in CA

AB2928                   2000: Traffic Congestion Relief Act, $5 billion. Also establishes exchange of Fed RSTP & CMAQ funds for State transportation funds.

AB3929                   Transportation Enhancement Relief Act

ABA                        Appropriated Budget Authority

ABAG                      Association of Bay Area Governments

ABET                      Accreditation Board for Engineering

and Technology

ABM                        Air Blown Mortar

ABME                     Area Bridge Maintenance Engineer

ABS                         Acroconitril-Butadiene-Styrene,

                Antilock Braking System

AC                           Advance Construction

A&C                        Abatement and Control

ACB                         Asphalt Concrete Base

ACE                         Alamont Commuter Express;

Rail Program – Stockton to San Jose

ACHP                      Advisory Council on Historic Preservation             

ACI                          American Concrete Institute

ACOE                      Army Corps of Engineers       

ACP                         Asphalt Concrete Pavement,

Asbestos Cement Pipe

ACPA                      American Concrete Pavement Assoc.

ACPPA                    American Concrete Pressure Pipe Association

ACR                         Allocation Change Request

ACSP                       Automated Capital Spending Plan

ACTA                      Alameda County Transportation Authority

ACWP                      Actual Cost of Work Performed

ADA                        Americans with Disabilities Act,

Advance Deposit Application

(for local program reimbursements.)

ADAAG                   Americans with Disabilities Act

Accessibility Guidelines

ADIS                       Advanced Driver Information System

ADM                       Arrow Diagramming Method

ADMS                     Archived Data Management Subsystem (ITS)

ADR                        Alternative Dispute Resolution

AdSC                       Administrative Service Center                 

ADT                        Average Daily Traffic

ADUS                      Archived Data User Service (ITS)

AE                           Area Engineer

A&E                        Architectural & Engineering

AED                        Associated Equipment Distributors

AEM                        Acoustic Emission Monitoring

AEP                         Association of Environmental Professionals

AFD                         Architecture Flow Diagram

AFO                         Animal Feeding Operation

AFT                         American Farmland Trust

AGC                        Association of General Contractors

AGT                        Automated Guideway Transit

AHAR                      Automatic Highway Advisory Radio

AHS                         Automated Highway System,  

Average Highway Speed

AI                            Artificial Intelligence;  active ingredient

                                Asphalt Institute

AIA                         American Institute of Architects                             

AIAC                       American Indian Advisory Council

AI/E                         Architectural Inventory/Evaluation form

AID                         Architecture Interconnect Diagram (ITS)

AIHA                       American Industrial Health Association

AIMS                       Agency Information Management Strategy (TMS)

AIP                          American Institute of Planners

AIRS                        Aerometric Information Retrieval System

ALGOL                   Algebraic Oriented Language

ALOADS                 Automated Location and Design System

AL                           Acceptable Level,

regulatory Action Level (water qual.)

ALP                         Annual Leave Program

AM                          Amplitude Modulation, Anti Meridian

AMBAG                  Association of Monterey County Bay Area Govts

AMBER alert           America’s Missing: Broadcast Emergency Response

AMFA                     Alternative Motor Fuels Act

AMIS                       Automated Management Information System

AMPS                      Advanced Mobile Phone System (ITS)

ANPRM                   Advanced Notice of Proposed Rule Making

ANSI                       American National Standards Institute

ANWR                     Arctic National Wildlife Refuge (Alaska)

AO                           Agency Object (3-digit code used in TRS,

 also in WBS)

AOA                        Activity-on-Arrow

AON                        Activity-on-Node

APA                         Asphalt Pavement Alliance

APE                         Area of Potential Effect

APCD                      Air Pollution Control District

APDE                      Advance Project Development Element

APEC                       Automated Procedures for Engin. Consultants

APEI                        Area of Potential Environmental Impact

APHA                      American Public Health Association

APM                        Area Project Managers,

Assistant Project Manager

APN                         Assessor’s Parcel Number

ARRA                      Asphalt Recycling and Reclamation Assoc.

APS                         Advance Planning Study;

Accessible Pedestrian Signals

APSEA                    Asian-Pacific State Employees Association            

APT                         Accelerated Pavement Testing

APTA                      American Public Transit Association

APTS                       Advanced Public Transportation System (ITS)

APU                         auxiliary power units

APWA                     American Public Works Association

AQCP                      Air Quality Control Program

AQCR                      Air-Quality Control Region

AQI                         Air Quality Index

AQMA                     Air-Quality Maintenance Area

AQMD                     Air Quality Management District

AQMP                     Air Quality Management Plan

ARA                        Automatic Road Analyzer

ARB                         Air Resources Board

AR’s                        Attainment Regulations

AREA                      American Railway Engineering Association            

ARHM                     Asphalt-Rubber Hot Mix

ARHM-GG              Asphalt-Rubber Hot Mix – Gap Graded

ARM                        Air Resources Management

ARTBA                    American Road & Transportation Builders Assoc.

ARTS                       Advanced Rural Transportation Systems

AS                           Aggregate Subbase

ASAP                       As-Soon-As-Possible

ASC                         Admin. Services Center

                Accounting Services Center    

Agricultural Services Center

ASCE                       American Society of Civil Engineers

ASCII                      American Standard Code of Info. Interchange

ASF                         Automotive Safety Foundation

ASHRAE                 American Society of Heating, Refrigerating, and Air-Conditioning Engineers

ASI                          Acceleration Severity Index

ASME                      American Society of Mechanical Engineers            

ASNT                      American Society for Nondestructive Testing

ASPEN                    Automated Telephone Answering System

ASR                         Archaeological Survey Report; 

(Evaluation of prehistoric archaeological resources in the project study area)

Alkali-silica reactivity

ASRP                       Aluminum Spiral Rib Pipe

AST                         Acceptance Samples and Tests

ASTM                      American Society for Testing Materials

ATA                        American Trucking Association

ATAC                      Active Transportation Advisory Committee

ATIS                        Advanced Traveler Information Systems

ATMS                      Advanced Traffic Management Systems

ATP                         Active Transportation Progarm/Plan

ATPB                       Asphalt Treated Permeable Base

ATSAC                    Automated Traffic Surveillance & Control System

ATSD                      Advanced Transportation System Development

ATSSA                    American Traffic Safety Services Association

ATV                        All Terrain Vehicle

AU                           Animal Unit

AVA                        Abandoned Vehicle Abatement

AVCO                      Automatic Vehicle Control Systems

AVCS                      Advanced Vehicle Control Systems (ITS)

AVI                         Automated Vehicle Identification

AVL                        Authorized Vehicle Lane;  

Automated Vehicle Location (ITS)

AVO                        Automated Vehicle Operation (ITS)

AVR                        Average Vehicle Ridership

AWRA                     American Water Resources Association

AWS                        Alternate Work Schedule                                                         American Welding Society

AWT                        Average Weekday Traffic

AWWA                    American Water Works Association       


BAC                         Blood Alcohol Concentration,

Budget at Completion

BACM                     Best Available Control Measures            

BACT                      Best Available Control Technology

BADT                      Best Available Demonstrated Technology

BAGR                      Bridge Approach Guard Rail

BALI                       Basic Arterial Local Intersection

BAMS                      Bid Analysis and Management System

BARM                     Basic Asphalt Recycling Manual             

BART                      Bay Area Rapid Transit

BAS                         Bridge Approach Slab

BASS                       Black Advocates in State Service

BASIC                     Beginners All Purpose Symbolic Instruction Code

BAT                         Best Available Technology,

Bureau of Apprenticeship and Training  (DOL)

BB                           Beginning of Bridge

BBS                         Bulletin Board System,           

Battery Backup System

BC                           Beginning of Curve

BCA                         Benefit Cost Analysis

BCO                         Thin-Bonded Concrete Overlay                              

BCP                         Budget Change Proposal: Official request to D/Finance & Legislature to revise level or sources of funding.

BCR                         Begin Curb Return

BCT                         Breakaway Cable Terminal

BCWP                      Budgeted Cost of Work Performed

BCWS                      Budgeted Cost of Work Scheduled

BEA 1990                                Budget Enforcement Act of 1990

BEAR                      Broad Emergency Assistance Radio (System)

BEES                       Basic Engineering Estimating System

BEP                         Business Enterprise Program

BER                         Bridge Evaluation Report

BFRs                        Brominated Flame Retardants: widely used in plastics, foams, textiles, many electrical appliances, and building materials such as house walls, roofs and parking decks. Increasing amounts of BFR residues have been detected in humans and the environment.

BHT                         Business, Housing, and Transportation Agency

BIA                          Bureau of Indian Affairs;  

Building Industry Association

BIOS                        Basic Input/Operating System

BIR                          Bridge Inspection Report

BIT                          Binary Digit                                            

BLA                         Bicycle Lane Account program (State)

BLM                        Bureau of Land Management

BMP                        Best Management Practice

BMS                        Bridge Management System, process for achieving cost effective maintenance       

BNF                         Backus- Naur Form (ITS)

BNSF                       Burlington Northern Santa Fe

BO                           Budget Obligations, Biological Opinion

BOD                        Biochemical Oxygen Demand,

Biological Oxygen Demand

BOD5                      Biochemical oxygen demand (as measured in the standard 5-day test)

BSO                         Building, Structures and Obstruction report (HPSR)

BP                            Before Present, Boiling Point                  

BPM                        Beginning Post Mile.

= zero at south or west County line

BPR                         Business Process Review

(1997 study of project management in Caltrans)

BPR                         Bureau of Public Roads

BRT                         Bus Rapid Transit (ITS)

BSR                         Beginning of Slope Rounding

BSW                        Back of Sidewalk

BTA                         Bicycle Transportation Account

BT&H                      Business, Transportation and Housing Agency

BTOS                       Basic Traffic Operations System

BTS                         Bureau of Transportation Statistics

BUN                        Blood Urea Nitrogen

BVC                         Begin Vertical Curve

BW                          Barbed Wire

BWF                        Barbed Wire Fence                                  


CAA                        Federal Clean Air Act (1970),

Cable Anchor Assembly                         

CAAA                     Clean Air Act Amendment of 1990,

(1977 & 1970)

CA                           Contract Authority, Certification Acceptance

CAATS                    Calif. Alliance for Advanced Transportation Systems

CAC                         California Administrative Code,

Citizens Advisory Committee

CAD                        Computer-Aided Drafting

CADD                      Computer-Aided Drafting and Design

CAER                      Community Awareness and Emergency Response

CAFO                      Concentrated Animal Feedlot;

Consent Agreement/Final Order

CAG                        Citizens Advisory Group

CAH                        Controlled Access Highways

CALACT                 Calif. Association for Coordinated Transportation

CASASFMRA          California Association of Farm Managers and Rural Assessors

CALNET                 Calif. Integrated Telecom. System (8-….)

Cal OES                      California Office of Emergency Services

Cal/OSHA                                Calif. Office of Safety and Health Administration

CAM                        Caltrans Administrative Manual,             

Cooperative Agreement Manual

CAMP                      Continuous Air Monitoring Program

CANDE                   Culvert Analysis and Design

CAO                        Corrective Action Order

CAP                         Corrugated Aluminum Pipe,                                                     Certification Acceptance Plan

                                Corrective Action Plan.                                                            Control Account Plan

Cost Allocation Procedure.                      Criteria Air Pollutant

CAPA                      Corrugated Aluminum Pipe Arch

CAPM                      Capital Preventive Maintenance

CAQP                      Congestion and Air Quality Program

CAR                         Caltrans Action Request,                                                          Cooperative Agreement Report

CARB                      California Air Resources Board

CARS                       Caltrans Auxiliary Radio System

CAS                         Construction area signs

CASAC                    Clean Air Scientific Advisory Committee

CASE                       Computer Aided Software Engineering;

Computer Aided Systems Engineering (ITS)

CASP                       California Aviation System Plan;            

Corrugated Aluminized Steel Pipe

CAT EX                   Categorical Exemption (State);

Categorical Exclusion (Federal)

CATIA                     Clean Air and Transportation Improvement Act

CaTNAP                  California Traffic Noise Analysis Protocol (

CATV                      Cable Television

CB                           Catch Basin, Citizens Band

CBA                         Cost Benefit Analysis

CBC                        California Bicycle Coalition,

California Building Code

CBD                         Central Business District

CBMC                      Causes Beyond My Control (my coinage)               

CBO                         Congressional Budget Office

CBR                         California Bearing Ratio

CBTP                       Community Based Transportation Planning grants

CC                           Construction Complete

CCA                         California Coastal Act of 1976

CCAA                      Calif. Clean Air Act

CCAPA                    California Chapter of the American Planning Association

CCB                         Change Control Board

CCC                         California Coastal Commission;              

California Conservation Corps

CCI                          Construction Cost Index

CCIC                        Central California Information Center

CCMP                      Comprehensive Conservation and Manage. Plan

CCO                         Contract Change Order

CCR                         California Code of Regulations

CCROC                    California Civil Rights Officers Council

CCS                         California Coordinate System;

Construction Control Survey

CCSFCC                   City-County-State-Federal Cooperation Council

CCTV                      Closed Circuit TV

CD                           Contract delegation (purchase order)      

CDC                         Centers for Disease Control

CDF                         California Department of Forestry

CDBG                      Community Development Block Grant

CDFG                      Calif. Dept of Fish & Game

CDH                        California Division of Highways

CDL                         California Drivers License

CDMA                     Code Division Multiple Access (ITS)

CDPD                      Cellular Digital Packet Data (ITS)

CD(PO)                    Contract Delegation (Purchase Order)

CE                           Categorical Exclusion (NEPA);             

Categorical Exemption, (CEQA)

Construction Engineering

CEA                         Career Executive Assignment (Appointment)

CEAC                      County Engineers Association of California;

Caltrans Employment Advisory Committee

CEBC                       Conference

CEC                         California Energy Commission;              

Caltrans Encroachment Committee

CELSOC                  Consulting Engs. and Land Surveyors of Calif.

CEMs                      Continuous Emissions Monitors

CEP                         Cumulative Exposure Project

CEQ                         Council of Environmental Quality

(Federal Agency)

CEQA                      California Environmental Quality Act (1970)

CERCLA                  Comprehensive Environmental.Response, Compensation/Liab. Act

CERES                     Calif. Envir. Resources Evaluation System

CERF                       Civil Engineering Research Foundation

CERL                       Construction Engineering Research Laboratory

CESA                       Calif. Endangered Species Act

CEU                         Continuing Education Unit

CFC                         Cost of Facilities Capital, Chlorofluorocarbons

CFDA                      Catalogue of Federal Domestic Assistance

CFM                        Chlorofluoromethanes

CFR                         Code of Federal Regulations

CFRA                       The California Family Rights Act of 1992 is a State law administered and enforced by the California Department of Fair Employment and Housing. CFRA was revised to conform to the Family Medical Leave Act of 1993.

CFRP                       Carbon-Fiber-Reinforced-Plastic

CFS                          Cubic feet per second

CFU                         Colony Forming Unit (water qual)

C&G                        Curb and Gutter                                      

CGP                         Construction General Permit (NPDES)

CH4                          Methane

CHIN                       California Highway Information Network

CHP                         Calif. Highway Patrol

CHIN                       California Highway Information Network:

1-800-427-7623, 999

or,   #999

CHRIS                    Calif. Historical Resources Information System

CIA                         Community Impact Assessment; Evaluates the impacts that a project may have on community, incl, neighborhoods and farmland.

CIC                          Critical Intersection Control

CIDH                       Cast-in-Drilled-Hole

CIMAC                    Caltrans Improves Mobility Across California

CIP                          Capital Improvement Program – 7-year program to maintain or improve traffic LOS & transit performance and to mitigate impacts identified by the CMP;

Cast-in-Place; cast iron pipe

CIPCP                      cast-in-place concrete pipe

CIR                          Council on Intergovernmental Relations

                                Cold In Place (recycling of asphalt)

CIT                          California Institute of Technology

CITAB                     Calif. Information Technology Advisory Board

CIU                          Controller Interface Unit

CIWMB                   California Integrated Waste Management Board

C&L                        Certification and Licensing

CLAS                       California Leave Accounting System

CLP                         Continuous Learning Program

CLUP                       Comprehensive Land Use Plan

CMA                        Congestion Management Agencies

CMAQ                    Congestion Mitigation and Air Quality

CMB                        Concrete Median Barrier

CMC                        Construction Metrication Council

CMP                        Congestion Management Program, Plan;

Corridor Management Plan (Scenic Highways);

Corrugated Metal Pipe

CMS                        Congestion Management System,                                             Changeable Message Signs

CMSA                      Consolidated Metropolitan Statistical Area

CMV                        commercial motor vehicles

CNDDB                   California Natural Diversity Data Base    

CNG                        Compressed Natural Gas

CNLM                     Center for Natural Lands Management.

CNPS                       California Native Plant Society (data base)

CO                           Carbon Monoxide

COB                         Close of Business

COBOL                    Common Business Oriented Language

COBRA                    Consolidated Omnibus Reconciliation Act

COC                        Citizen’s Overrsight Committee

COCO                      Contractor-Owned/ Contractor-Operated

COD                        Chemical Oxygen Demand

CODP                      Career Opportunity Development Program

COE                         Category of Expenditure (budgetary grouping)

U.S. Army Corps of Engineers

COFPAES                Council on the Federal Procurement of Architectural and Engineering Services

COG                       Council of Governments (local, see LTA)

COH                        Coefficient Of Haze

COGO                      coordinate geometry

COL                         Collector (Urban)

Congestion               Reduced speeds less than 35 MPH

for longer than 15 min.

COP                         Capital Outlay Projects

CORBA                    Common Object Request Broker Architecture (ITS)

COS                         Capital Outlay Support

COS                            College of the Sequoias

COTR                      Contracting Officer Technical Representative (ITS)

COZEEP                  COnstruction Zone Enhanced Enforcement Program or Patrol

CP                            Capital Projects

CPC                         Consolidated Planning Committee (STANCOG)

CPF                          Combined Pay Factor

CPFF                        Cost-Plus-Fixed-Fee

CPH                         California Permit Handbook

CPI                          Cost Performance Index

CPIF                        Cost-Plus-Incentive-Fee

CPM                        Critical Path Method

CPMC                      Capital Projects Management Council

CPR                         Cardio-Pulminary Resusitation               

CPRC                       California Public Resources Code

CPSD                       Capital Project Skill Development

CPU                         Central Processing Unit

CPUC                       Calif. Public Utilities Commission

CRAC                      Cold Recycled AC

CRAP                       Construction Records and Procedures

CRB                         Contract Review Board

CRCP                       Continuously Reinforced Concrete Pavement

CRDA                      Cooperative Research and Development Agreement

CRHP                       California Register of Historic Places

CRIP                        Cost Reduction Incentive Proposal

CRLF                       California Red Legged Frog

CRP                         Conservation Reserve Program;              

Combined Road Plans

CRSI                        Concrete Reinforcing Steel Institute

CRT                         Cathode Ray Tube

CRV                         California Redemption Value

CSAC                       California State Association of Counties;                

California Supervisors Association of California

CSD                         Context Sensitive Design

CSEA                       California State Employees Association

CSHC                       Calif. Streets & Highways Code

CSI                          Common Sense Initiative;

Compliance Sampling Inspection

CSIP                        Corridor Safety Improvement Program

CSO                         Combined Sewer Overflow

CSP                          Corrugated Steel Pipe;

Communication Service Provider (ITS)

CSPA                       Corrugated Steel Pipe Arch

CSRC                       California Special Reference Center

(global positioning technologies)

CSS                         Context Sensitive Solutions (involving all stakeholders in the development of a project to ensure that a project fits its physical setting and preserves scenic, aesthetic, historic and environmental resources while maintaining safety and mobility.

CSTI                        California Specialized Training Institute

CSUS                       California State University, Stanislaus; Sac.            

CSWC                      Construction Storm Water Coordinator

CT                           Caltrans,  Census Tract

CTAA                      Community Transportation Assoc. of America

CTAP                       Cooperative Training Assistance Program (Fed)

CTB                         Cement Treated Base

CTC                         California Transportation Commission;

Nine appointed members

CTE                         Center For Transportation And The Environment

CTO                         Compensatory Time Off

CTP                         California Transportation Plan

CTIFS                      Calif. Transportation Infrastructure Funding System

CTIPS                      California Transportation Improvement Plan System. A computer database used by CT & MPOs to input & track Fed. Funded transportation projects. See LPAMS

CTIS                        California Transportation Investment Strategy

CTPB                       Cement Treated Permeable Base

CTR                         California Toxics Rule

C-TRIS                    Calif. Transportation Research Info. System (UCB)

CTS                         Commuter Transportation Services

CTSA                       Coordinated Service Transportation Agency

CUF                         Commercially Useful Function (DBE)

CV                           Cost Variance

CVAS                      Commercial Vehicle Administration Subsystem (ITS)

CVCS                       Commercial Vehicle Check Subsystem (ITS)

CVHAS                    Cooperative Vehicle-Highway Automation Systems

CVISN                     Commercial Vehicle Info. Systems and Networks (ITS)

CVO                        Commercial Vehicle Operations (ITS)

CVS                         Commercial Vehicle Subsystem (ITS)

CWA                        Clean Water Act

CWD                        Corridor Wide Display System (ITS)

CWNS                      Clean Water Needs Survey

CY                           Calendar Year

CYA                        Cover Your Assets (not CT);                                                   California Youth Authority

CZMA                     Coastal Zone Management Act                

CZARA                    Coastal Zone Act Reauthorization Amendments


DAB                        Digital Audio Broadcast (ITS)

DAC                        Disability Advisory Council                   

DAF                         Damage Assessment Form

DAMP                     Drainage Analysis & Modeling Program

DAR                        Defense Access Roads

DAR                           Dial-a-Ride

DART                         Dinuba Area Regional Transit

DARTS                    Dynamic Arterial Responsive Traffic Signal System

DAT                        Diagnostic Acceptance Testing

DAT.COM               Director’s Advisory Team for Communication

DBA                        Doing Business As, Decibels, “A” Scale

DBE                         Disadvantaged Business Enterprise

DBELO                    Disadvantaged Business Enterprise Liaison Officer

DBMS                      Data Base Management System

D/C                          Demand Capacity ratio

DCIU                       Discrimination Complaint Investigation Unit

DCP                         Dynamic Cone Penetrometer

DCS                         Data Collection System

DCU                        Discrimination Complaint Unit

DD                           District Director; Data Dictionary (ITS)

DDC                        District Division Chief

DDD                        Deputy District Director

DDE                        Data Dictionary Element (ITS)                                

DDT                        DichloroDiphenylTrichloroethane

DEB                         District Environmental Branch

DED                        Draft Environmental Document

DEIR                       Draft Environmental Impact Report (CEQA)

DEIS                        Draft Environmental Impact Statement (NEPA)

DEN                        Data Exchange Network (ITS)

DES                         Division of Engineering Services                                                             Diethylstilbesterol

DF                           Douglas Fir

DFD                         Data Flow Diagram (ITS)

DfE                          Design for the Environment

DFEH                      Department of Fair Employment and Housing (California)

DFG                         Dept of Fish and Game (Cal)                  

DGAC                      Dense Graded Asphalt Concrete

DGAC(R)                                 Dense Graded Asphalt Concrete (Rubberized)

DGPS                       Differential Global Positioning System (ITS)

DGS                         Department of General Services

DHS                         Department of Health Services

DHHS                      Department of Health and Human Services (Feds)

DHV                        Two way Design Hourly Volume

DI                            Drainage Inlet

DIB                          Design Information Bulletin

DIB 82                     Pedestrian Accessibility Guidelines for Highway Projects

DIP                          Diamond Interchange Program

DLAE                      District Local Assistance Engineer

DLR                         Detection Limit for Reporting (water qual.)

DMBB                     Double metal beam barrier

DME                        District Materials Engineer

DMR                        Discharge Monitoring Report

DMS                        Dynamic Message Sign (ITS)

DMT                        Division of Mass Transportation                            

DMV                       Department of Motor Vehicles

DNA                        deoxyribonucleic acid

DND                        Draft Negative Declaration

DOA                        Division of Aeronautics; Division of Accounting

DOC                        Department of Commerce (Feds)

DOD                        Department Of Defense

DOE                        Department Of Energy; District Office Engineer

DOF                         Department of Finance

DOJ                         Department of Justice (Feds)

DOL                        Department of Labor (Feds)

DLA                        Division of Local Assistance (formerly OLP)

DOL FOH                Dept. of Labor Field Operations Handbook (Feds)

DOS                         Division of Structures; Disk Operating System

DOT                        Dept. of Transportation                          

DOTP                      Division of Transportation Planning

DPA                         Dept. of Personnel Administration

DPI                          Dots per Inch

DPR                         Department of Parks and Recreation  (The Office of Historic Preservation which administers Section 106 of the Historic Preservation Act is part of State Parks and Recreation.  Hence, the DPR forms for Section 106.)

DRB                         Dispute Review Board

DRI                          Division of Research & Innovation

DRIM                      Draft Relocation Impact Memo

DRIS                        Draft Relocation Impact Study/Statement

DROA                      departmental restriction of appointments

DSA                         Division of the State Architect,

Disturbed Soil Area

DSB                         Donor State Bonus funds

DSC                         Division of Structure Construction

DSI                          Detailed Site Investigation

DSMP                      District System Management Plan

DSRC                       Dedicated Short Range Communications (ITS)

DST                         Daylight Savings Time

DSWC                      District Storm Water Coordinator

DTA                        Dynamic Traffic Assignment (ITS)

DTAC                      Departmental Transportation Advisory Committee

DTBB                      double thrie beam barrier

DTIM                      Direct Travel Impact Model

DTM                        Digital Terrain Modeling

DTR                         Director’s Tracking Report

(tracks consultant services contracts)

DVAC                      District Value Analysis Coordinator

DVBE                      Disadvantaged Veteran Business Enterprise

DWEL                     Drinking Water Equivalent Level

DWNS                     Drinking Water Needs Survey

DWR                        Dept. of Water Resources

DWS                        Drinking Water Standard         


EA                           Expenditure Authorization;

Endangerment Assessment;

Enforcement Agreement;

Environmental Action;

Environmental Assessment;

Environmental Audit              

EAC                         Estimate at Completion                           

EAP                         Employee Assistance Program;

Environmental Action Plan

EAR                         Employee Action Report

EBL                         Eligible Bridge List

EC                           Environmental Coordinator,                   

End Horizontal Curve,             End Curve

ECPA                       Electronic Communications Privacy Act (ITS)

ECR                         Engineering Cost Reporting system,        

End of Curb Return

ED                           Environmental Document

EDA                        Employee Development Appraisal                                           Environmental Document Approved

EDAPTS                  Efficient Development of Advanced Public Transportation Systems

EDI                          Electronic Data Interchange (ITS)

EDM                        Electronic Distance Measuring

EDP                         Electronic Data Processing;  

Early Deployment Plan (ITS)

EDW                        effluent-dominated water

EEG                         electroencephalogram

EEM                        Environmental Enhancement & Mitigation program (State)                    

EEO                         Equal Employment Opportunity

EEOC                      Equal Employment Opportunity Commission

EEZ                         Exclusive Economic Zone,

200 miles beyond coast, Magnusen-Stevens Act

EF                            Early Finish

EFH                         Essential Fish Habitat

EFT                         Electronic Fund Transfer

EIR                          Environmental Impact Report (CEQA)

EIS                          Environmental Impact Statement (NEPA)

EIT                          Engineer-in-Training

EJ                            Environmental Justice

EKG                        electrocardiogram   

ELI                          Element Level Inspection (bridges)        

EMC                        Event Mean Concentration (Storm Runoff);   Emergency Management Center (ITS)

EMFAQ                  Emissions Factors Model

EMMS                     Emissions Management Subsystem (ITS)

EMS                        Extinguishable Message Signs

Equipment Management Systems

EO                           Equal Opportunity, Executive Order

EOC                         Emergency Operations Center

EOG                        Education And Outreach Group

EOS                         Equivalent Opening Size (Geotextile-Fabric);                           Edge of Shoulder

E&P                        Environmental & Permit

EPA                         Environmental Protection Agency

EPCRA                    Emergency Planning and Community

Right-to-Know Act

EPI                          Economic Policy Institute

EPL                         Excluded Partial List (DBE)

EPM                        Ending Post Mile

EPROM                   Erasable Programmable Read-Only Memory

ER                           Emergency Relief (Fed)

ERC                         Emergency Resource Center

ERISA                     Employee Retirement Income Security

ERNS                       Emergency Response Notification System

ERPP                       Ecosystem Restoration Program Plan (CALFED)

ES                            Early Start

ESA                         Endangered Species Act;  

Environmentally Sensitive Area

ESAL                       Equivalent Single Axle Load, 80 kN

ESC                         Engineering Services Center

ESMR                      Enhanced Specialized Mobile Radio (ITS)

ESP                          Enhanced Services Program

ESR                         End of Slope Rounding

ESU                         Evolutionary Significant Unit

(fall, winter & spring runs of salmon)

ET                           Earliest Time of Completion                   

ETC                         Estimate to Complete,

Electronic Toll Collection (ITS)

ETBE                       Ethyl Tertiary Butyl Ether

ETS                         Emergency Telephone Services (ITS)

ETTM                      Electronic Toll Collection and Traffic Management

ETW                        Edge of Traveled Way

EV                           Earned Value

EVC                         End Vertical Curve

EWRI                       Environmental & Water Resources Institute (of ASCE)

EXPEAR                  Expert System Pavement Evaluation and Rehabilitation

E-76                        Authorization to Proceed Summary Form           


FAA                         Federal Aviation Administration                             

FACTS                     Flexible Advanced Computer Traffic Signal System

FADS                      Federal Aid Data System: System which DLAEs & HQ enter project information and which links CT to FHWA’s FMIS system. Does not link to LP2000.

FAE                         Federal-Aid Eligibility Code: This single-digit code is a prefix used with the three-digit Agency Object Code to form the Caltrans four-digit Object (FAE 6, 7, or 8) and Activity (FAE 1 or 2) Codes. The FAE denotes whether or not the Object/Activity Code is eligible for federal reimbursement. FAE 1 or 6 denotes eligibility for federal reimbursement, FAE 2 or 7 denotes non-eligibility for reimbursement, and FAE 8 denotes undetermined eligibility.

FAHP                       Federal Aid Highway Program

FAI                          Federal Aid Interstate

FAP                         Federal Aid Primary

FAPG                       Federal Aid Policy Guide

FAQ                         Frequently Asked Questions

FAR                         Federal Acquisition Regulations

FARA                      Federal Acquisition Reform Act

FARES                     First American Real Estate Solutions

FARS                       Fatal Accident Reporting System (ITS)

FAS                         Federal Aid Secondary Funding

FAU                         Federal Aide Urban funding                    

F&C                         Frame & Cover

F&G                        Frame & Grate

FCAA                      Federal Clean Air Act of 1990

FCRTA                      Fresno County Rural Transit Agency

FCWA                      Federal Clean Water Act

FCR                         Flexible Congestion Relief program

(State, discontinued)

FDR                         Full Depth Reclamation (of pavament)

FE                            Fund Estimate; Fugitive Emissions

FEBBS                     Federal Electronic Bulletin Board System

FED                         Final Environmental Document


FEHA                      Fair Employment and Housing Act (Calif.)

FEIN                        Federal Employer Identification Number

FEIR                        Final Environmental Impact Report (CEQA)

FEIS                        Final Environmental Impact Statement (NEPA)

FEMA                      Federal Emergency Management Agency

FERC                       Federal Energy Regulatory Commission

FES                          Flared end section

FESA                       Federal Endangered Species Act

FF                            Free Float / Finish to Finish

FFA                         Future Farmers of America

FFGA                       Full Funding Grant Agreements

FFP                          Firm Fixed Price

FFS                          Fee For Service health plan

FFY                         Federal Fiscal Year (October 1 thru September 30)

FHLMC                   Federal Home Loan Mortgage Corporation (Freddie Mac)

FHPM                      Federal Aid Highway Program Manual

FHWA                     Federal Highway Administration;

administers Federal highway funds

FICA                        Federal Insurance Contributions Act

FIF                           Final Inspection Form

FIP                           Federal Implementation Plan

FIPS                         Federal Information Processing Standard (ITS)

FIR                          Federal Indian Reservation

FIRM                       Federal Insurance Rate Maps (Flood Plains)

F/L                           Finance Letter

FLEP                       Forest Land Enhancement Program

(U.S. Forest Service)

FLHD                      Federal Land Highway Division

FLHP                       Federal Lands Highway Program

Floodplain Risk and Location Hydraulic Study:

Analyzes the potential for impacts that a project may have on increasing risk of flooding.

FLSA                       Fair Labor Standards Act

FM                           Function Manager

FMC                        Freeway Management Center (ITS)

FMCS                      Fleet Management and Control Systems

FMCSA                    Federal Motor Carrier Safety Administration

FMIS                       Federal Management Information System

FMLA                      Family and Medical Leave Act of 1993

FMMP                     Farmland Mapping and Monitoring Program           

FMP                         Fishery Management Plan;       File Maker Pro

FMS                         Fleet Management Subsystem (ITS)

FMU                        Forest Management Unit

FMVSS                    Federal Motor Vehicle Safety Standards

FNMA                     Federal National Mortgage Association

(“Fannie Mae”)

FNM-76                   Form to FMIS, auth. to proceed

FO                           Functionally Obsolete (bridge)

FOE                         Finding of Effect; Friends Of the Earth

FOI                          Freedom of Information

FOIA                       Freedom Of Information Act

FONSI                     Finding of No Significant Impact (NEPA)

FOT                         Field Operational Test (ITS)

FPA                         Fair Practices Act (subletting and subcontracting)

FPIF                         Fixed-Price-Incentive-Fee

FPN                         Federal Project Number (FADS)

FPPA                       Farmland Protection Policy Act (US – 1984)

FPPP                        Facility Pollution Prevention Plans

FPR                          Final Program Review

FR                            Federal Register

FRA                         Federal Railroad Administration

FRIS                        Final Relocation Assistance Statement

FRM                        Federal Reference Method, Final Rule Making

FRO                         Federal Resources Office

FRP                          fiber reinforced polymer, used in concrete

F-SHRP                    Future Strategic Highway Research Program

FSOR                       Final Statement of Reasons

FS                            Finish-to-Start

FSA                          Flexible Spending Account Health Plan 

FSHCC                     Fast Setting Hydraulic Cement Concrete

FSP                          Freeway Service Patrol

FSR                          Feasibility Study Report;         

Financial Study Report

FSTIP                      Federal Statewide Transportation Improvement Program. Prepared by CT per ISTEA, includes all highway and transit projects funded under Title 23 and Federal Transit Act. It is the global funding document incorp. Programming for MPO TIPs, State STIP, SHOPP and local rural Federal aid work.

FTA                         Federal Transit Administration; administers Federal transit funds, alloc. dir to local agencies. Urban Mass Transportation Act of 1964

FTB                         Franchise Tax Board

FTE                         Focused Training Evaluation

                                Full-time Employee

FTIP                        Federal Transportation Improvement Program;

3-year list of transportation projects proposed within the planning area of an MPO. Short range version of RTP.

                                Projects are drawn from the STIP and SHOPP.

FTP                          File Transfer Protocol, Federal Test Procedures

FU                           Functional Unit

FVMSS                    Federal Motor Vehicle Safety Standards

FWD                        Falling Weight Deflectometer

FWPCA                    Federal Water Pollution Control Act

FWS                        Fish & Wildlife Service (US)

FY                           Fiscal Year              


GAAP                      Generally Accepted Accounting Principles              

GAO                        General Accounting Office

GAR                        Governor’s Action Request

GARVEE                 Grant Anticipation Revenue Vehicle bonds

GASB 34                 Governmental Accounting Standards Board statement 34 (calls for state and local transportation agencies to include the costs of infrastructure assets in their financial statements)

GATS                      General Agreement on Trade in Services

GDP                         Gross Domestic Product

GE                           Gravel equivalent

GEP                         Good Engineering Practice

GERT                      Graphical Evaluation and Review Technique

Gf                            Gravel Factor

GFE                         Good Faith Effort

GHSA                      Governors Highway Safety Association

GHSR                      Governor’s Highway Safety Representative

GIS                          Geographic Information Systems

GNMA                     Government National Mortgage Association (“Ginnie Mae”)

GOGO                     Government-Owned/ Government-Operated

GPS                         Global Positioning System

GRAS                      Generally Recognized as Safe                 

GR                           Guard Rail

GRH                        Guaranteed Ride Home

GSA                         General Services Admin.

GUI                         Graphical User Interface

GVW                       Gross Vehicle Weight

GVWR                     Gross Vehicle Weight Rating                   


HA                           Health Advisory                                     

H&T                        Hub and Tack

HABR                      Historic American Building Record

HABS                      Historic American Buildings Survey

HAER                      Historic American Engineering Record

HAP                         Hazardous Air Pollutant

HAPPS                     Hazardous Air Pollution Prioritization System

HAR                        Highway Advisory Radio

HASR                      Historic Architecture Survey Report;  Evaluation of historic structures in the project study area

HAZMAT                                Hazardous Materials

HAZOPS                  Hazardous Operations

HB&M                     Humbolt Base and Meridian                   

HBO                        Health Benefits Office

HBRR                     Highway Bridge Rehab. & Replacement

(Fed program)

HCM                        Highway Capacity Manual

(Transportation Research Bd. )

HCP                         Habitat Conservation Plan

HCS                         Hazard Communication Standard

HDD                        Horizontal Directional Drilling

HDM                       Caltrans Highway Design Manual

HDPE                      High Density Polyethylene

HEDTL                    Harmer E Davis Transportation Library

HEEP                       Health and Environmental Effects Profile

HEPA                      Highly Efficient Particulate Air (Filter)

HERS-ST                 Highway Economic Requirements System-State Version software (for planning and scheduling highway work and determining future highway system needs.)

HES                         Hazard Elimination Safety program (Fed)

HFC                         Hydrofluorocarbon                                 

HHS                         U.S. Department of Health and Human Services

HI                            Height of Instrument (surveying)

HIC                          Highway Interchange Center

HMA                       Hot Mix Asphalt

HMO                       Health Maintenance Organization

HMP                        Hydromodification Management Plan (to control post-development peak stormwater runoff discharge rates and duration)

HMP                       Hazard Mitigation Plan

HMS                        Highway Maintenance System

HMTA                     Hazardous Materials Transportation Act

HMWM                   High Molecular Weight Methacrylate

(deck crack mitigation)

HOV                        High Occupancy Vehicle

(2 and in some cases 3 or more per car.)

HP                           Horse Power

HPC                         High Performance Concrete (also UHPC)

HPMS                      Highway Performance Monitoring System              

HP&R                      Highway Planning and Research

HPMS                     Highway Performance Monitoring Sytstem

HPS                         High Performance Steel

HPSR                       Historic Properties Survey Report;

Summarizes findings of HRER, ASR and HASR

HR                           Human Resource

HRAC                      Hot Recycled AC

HRER                      Historic Resource Evaluation Report; Evaluation of historic significance of certain man made features (canals) in the project study area         

HRI                          Highway Rail Intersection

HRNA                     Human Development Recovery Needs Assessments

HRIS                        Highway Research Information Service,                                  Human Resources Information System

HSDB                      Hazardous Substance Data Base

HSIS                        Highway Safety Information System

HSNS                       Highway System of National Significance

HSP                         Highway Safety Plan

HSPF                       Heating Season Performance Factor

HSOPP                     Highway Systems Operations & Protection Plan

HSR                         High Speed Rail, Historic Survey Report

HSRI                        Highway Safety Research Institute

HTF                         Highway Trust Fund

HTIMS                    Highway Technology Information Management System

HTML                     Hypertext Markup Language

HTTP                       Hypertext Transport Protocol

HUD                        Housing & Urban Development;   

Head Up Display (ITS)

Hydrology and Water Quality Study:  Analyzes the increase in storm water runoff likely to occur and  the potential impacts on water quality a project may have.

HUTA                      Highway User Tax Account

HVAC                      Heating, Ventilation, and Air-Conditioning system 

HWMP                     Hazardous Waste Management Plan        


IAST                        Independent Assurance Sampling and Testing

IBRC                        Innovative Bridge Research and Construction program (FHWA – TEA-21)

IBTC                        International Border Trade Corridor

ICAS                        Internet Contract Administration System

ICES                        Inter-modal Corridors of Economic Significance

I/D                           Incentive/Disincentive

IDL                          Interface Definition Language (ITS)

IDP                          Individual Development Plan

IEEE                        The Institute of Electrical and Electronic Engineers

IEN                          Information Exchange Network (ITS)     

IFB                          Invitation for Bid

IGR                          Inter Governmental Review

IHSDM                    Interactive Highway Safety Design Model (software)

I/I                            Infiltration and Inflow

IIP                           Inter-regional Improvement Program

ILD                          Inductive Loop Detector

IMMS                      Integrated Maintenance Management System

IMPC                       Integrated Plant Management and Control

IMPROVE               Interagency Monitoring of PROtected Environments

IMS                         Intermodal Facilities and Systems Management System

ILV/hr                     Intersecting Lane Vehicles per hour

IP                             Internet Protocol, Implementation Package             

IPA                          Information Practices Act; places specific requirements on State agencies in the collection, use, maintenance, and dissemination of information relating to individuals.

IPG                          Interagency Planning Group

IRIS                         Integrated Risk Information System

IRP                          Interregional Partnership (STANCOG)

IRR                          Intercity Rail;           Indian Reservation Roads

IRRS                        Interregional Route System

Interregional Road System Plan

IRS                          Internal Revenue Service

IRVM                      Integrated Roadside Vegetation Management

IRWA                      International Right of Way Association

IS                             Information Services,                              Initial Study

ISA                          Initial Site Assessment;

Evaluates potential for encountering hazardous materials in the project study area.

ISC                          Indirect Source Control                           

ISEA                        International Safety Equipment Assoc.

ISO                          International Standards Organization

ISP                           Information Service Provider

ISSC                        Information Systems Service Center

ISTEA                     Intermodal Surface Transportation Efficiency Act

IT                            Information Technology

ITA                          Intertribal Transportation Association

ITE                          Institute of Transportation Engineers      

ITS                          Intelligent Transportation System            s             

ITS America            Intelligent Transportation Society of America

ITSP                        Interregional Transportation Strategic Plan

ITI                           Intelligent Transportation Infrastructure

ITII                          International Technical Information Institute

ITIP                         Interregional Transportation Improvement Program; Portion of STIP that includes Caltrans selected projects (25% of fund)

ITMS                       Integrated Traffic Management System;  or

Intermodal Transportation Management System

ITS                          Intelligent Transportation Systems;

Institute of Transportation Studies (UC Berkeley)

ITSP                        Interregional Transportation Strategic Plan

IUOE                       International Union of Operating Engineers

IVHS                       Intelligent Vehicle-Highway Systems (now ITS)

IVI                           Intelligent Vehicle Initiative

IVIS                         In Vehicle Information System (ITS)      


JB                            Junction Box                           

JCL                          Job Control Language

JCP                          Jointed Concrete Pavement

JP                             joint pole

JPA                          Joint Powers Agreement

JPCP                        Jointed Plain Concrete Pavement

JRCP                        Jointed Reinforced Concrete

JS                             junction structure

JUA                         ?                                                             


KBES                       Knowledge Based Expert System

(Symbolic reasoning & Heuristics)

KISS                        Keep It Simple, Stupid (US Navy)

KSA                         Knowledge, Skills and Abilities


LA                           Local Agency                          

LAAPS                    Local Agency Automated Pay System

LACMTA                Los Angeles County Metropolitan Transportation Authority

LACTC                    Los Angeles County Transportation Commission

LAFCO                    Local Agency Formation Commission

LAMBRA                Local Agency Military Base Recovery Area

LAN                        Local Area Network

LAP                         Local Assistance Program

LAPG                      Local Assistance Program Guidelines

LAPM                     Local Assistance Procedures Manual

LARTS                    Los Angeles Regional Transportation Study

LASC                       Landscape Architecture Standards Committee

LCA                         Least Cost Alternate

LCB                         Lean Concrete Base

LCC                         Local Coastal Commission,    

League of California Cities,      Life Cycle Cost

LCCA                      Life Cycle Cost Analysis                        

LCD                         Liquid Crystal Display (Power Point Projector)

LCFS                       Low Carbon Fuel Standard

LCO                         Labor Compliance Officer

                                Local Capital Outlay projects                  

LCP                         Local Coastal Plan

LCS                         Lane Control Sign

LCTOP                   Low Carbon Transit Operations Program

LDAP                      Lightweight Directory Access Protocol

LDPE                       Low Density Polyethylene

LDS                         Labor Distribution System

LEAD                      Local Equivalent Area Drainage method

LED                         Light Emitting Diode

LEDPA                    Least Environmentally Damaging Practicable Alternative

LEL                         Lowest Explosive Level

LEM                        Location Efficient Mortgage (see TOD)  

LEO                         Low-Earth Orbit Satellite System

LEP                         Limited English Proficiency

LESS                       Least Cost Estimating & Scheduling System

LF                            Late Finish;  Linear Foot

LIBOR                     London InterBank Offered Rate

LIM                         Land Inventory and Monitoring system (SCS)

LIP                          Local Intersection Program

LJAC                       Local Jurisdiction Advisory Committee

LLP                         Limited Liability Partnership

LOC                         Local

LOE                         Level of Effort

LOL                         Layout Line

LOP                         Letter of Permission

LOS                         Level of Service (A=freeflow, F=gridlock)

LPA                         Local Programs Accounting

LPAMS                    Local Programs Accounting Management System: provides appropriation management and tracks expenditures for local assistance projects. Extracts data from CTIPS allowing LP2000 to process allocations.

LPG                         Liquid Petroleum Gas

LPP                          Local Programs Procedures    

LPP#                        Local Programs Procedure #

LRDC                      Labor Relations Decision Council

LRFD                       Load & Resistant Factor Design

LRH                         Last Resort Housing

LRMS                      Location Reference Messaging Standard (ITS)

LROP                       Long Range Operations Plan                   

LRT                         Light Rail Transit

LS                            Lump sum, Late Start, Land Surveyor

LSSRP                     Local Seismic Safety Retrofit Program

LSTP                       Local Surface Transportation Plan

LSUM                      Linear Synchronous Unipolar Motor

LT                           Limited Term

L&T                        Lead and Tack (surveying)

LTA                         Local Transportation Authority

LTAP                       Local Technical Assistance Program

LTC                         Local Transportation Commission

LTEC                       Least Total Expected Cost to the public design

LTF                         Local Transportation Fund; receives TDA revenues =  0.25% sales tax for transit, bike & pedestrian

LTMA                     Lightweight Truck Mounted Attenuator

LTPP                       Long-Term Pavement Performance         

LTS                         Lime Treated sub-Base

LUICE                     Land use Inventory Contingency and Edit

LUST                       Leaking Underground Storage Tank

LVDT                      Linear Variable Differential Transformers

LVR                         Low Volume Road                                  


MA                          Master Agreement;  Minimum Allocation funds: Minor Arterial

MACT                     Maximum Achievable Control Technology

MADT                    Monthly average daily Trips 

MAGLEV                Magnetic Levitation Transportation Technology Deployment Programs

MAIT                      Multidisciplinary Accident Investigation Team

MAN                       Metropolitan Area Network (ITS)

MAP                        Million Annual Passengers,

Multiple Alternative Planning

MAR                        Material Adjustment Report

MATES                   Materials and Technology Engineering and Science

MB                          Metal Beam, Megabytes

MBB                        Metal Beam Barrier

MBE                        Minority Business Enterprise

MBGR                     Median Barrier Guard Rail                      

MBO                        Management by Objectives                     

MC                          Medium curing

MCAG                     Merced County Assoc. of Governments

MCD                        Minor Civil Division

MCE                        Maximum Credible Earthquake

MCEDC                   Merced City Economic Development Corp.

MCFC                      Molten Carbonate Fuel Cell

MCL                        Maximum Contaminant Level

MCLG                     maximum contaminant level goal (water qual)

MCM                       Minimum Control Measures (water qual)

MCP                        Municipal Compliance Plan

MCSAP                    Motor Carrier Safety Assistance Program

MDB&M                 Mt. Diablo Base and Meridian (surveying)

MDI                         Model Deployment Initiative (ITS)

MEA                        Master Environmental Assessment

MEP                        Minority Engineering Programs,

Maximum Extent Practicable (water qual)

MERS                      Maintenance Employees’ Reporting System

MESO                      Maintenance Employee Safety Orientation

META                     Maintenance Equipment Training Academy

METS                      Materials Engineering and Testing Services

MG                          Minimum Guarantee funds

MID                         Modesto Irrigation District

MIME                      Multipurpose Internet Mail Extension

Minor Project- Less than $750,000, not STIP or SHOPP. In California, minor capital outlay consists of construction projects or equipment acquired to complete a construction project estimated to cost less than $750,000. The California Transportation Commission allocates a fiscal year level for this category with specific project allocation approval delegated to the Department. Minor is further segregated into two categories: Minor A – Minor construction projects with an estimated contract value between $117K – $750K. Minor B – Minor construction projects with an estimated value less than $117,000.


MIS                         Management Information Systems,                                          Major Investment Study

MITMT                   Major Incident Traffic Management Team

MJC                         Major Collector (Rural); Modesto Junior College

MLRA                     Major Land Resources Area

MMANC                  Municipal Management Association of Northern California

MMI                        Man-Machine Interface (ITS)

MMSI                      Maintenance Management System Improvement

MNC                        Minor Collector (Rural)

MOA                       Memorandum of Agreement                   

MODEM                  Modulator/Demodulator

(Convert binary to analog signal for phone)

MOE                        Measure of Effectiveness

MOS                        Metal-Oxide Semiconductor,  

margin of safety

MOST                      Methodology for Optimizing Signal Timing

MOU                       Memorandum of understanding

MPGR                      Metal Plate Guard Railing

MPO                       Metropolitan Planning Organization

MPU                        Microprocessing Unit

MSA                        Merit Salary Adjustment, Metropolitan Statistical Area, Management System Activities, a two digit code for levels 5,6 or 7 in WBS, also on TRS

MSAHP                Medical Savings Account Health Plan 

MSA                        Maintenance Superintendents Association 

MS-DOS                  MicroSoft-Disk Operating System          

MSDS                      Manufacturers Safety Data Sheet

MSE                        Mechanically Stabilized Earth Retaining

MS4                         Municipal Separate Storm Sewer System

MSL                        Maintenance Service Level,     Mean Sea Level

MSW                       Municipal Solid Waste

MT                          Mass Transit

MTA                        Mass Transit Account

MTC                        Metropolitan Transportation Commission

(Bay Area)

MTD                        Memo-To-Designers

MTDB                     Metropolitan Transit Development Board (San Diego)

MTMC                     Military Traffic Management Command

MTP                        Mass Transportation Program,

Metropolitan Transportation Plan

MUTCD                  Manual of Uniform Traffic Control Devices

MVMA                    Motor Vehicle Manufacturers Association

MWBE                     Minority Women-owned Business Enterprise


NA                           National Architecture (ITS)                     

NAA                        Non-attainment Area

NAAQS                   National Ambient Air Quality Standards

NACE                      National Association of Corrosion Engineers,

National Association of County Engineers

NACG                      National Association of County Governments

NAC                        National Association of Counties

NACTO                   The National Association of City Transportation Officials

NAD                        North American Datum (surveying)

NAE                        no adverse effect,   

National Academy of Engineering

NAER                      National Architectural and Engineering Record

NAFTA                    North American Free Trade Agreement   

NAGPRA                 Native American Graves Protection & Repatriation Act of 1990

NAHC                      Native American Heritage Commission

NAHSC                    National Automated Highway System Consortium

NAICS                     North American Industrial Classification System 

NALEO                   National Association of Latino Elected and Appointed Officials

NAMS                     National Air Monitoring Stations                            

NAP                         Non-attainment Area Plan 

NAPA                      National Academy for Public Assistance, National Asphalt Paving Association, National Automobile Parts Association

NAPCA                    National Air Pollution Control Administration

NAR                        National Architecture Review (ITS)

NARD                      Numerical Analysis of Roadside Design

NARSTO                 North American Research Strategy for Tropospheric Ozone

NAS                         National Academy of Sciences

NASA                      National Aeronautics and Space Administration

NASR                      Negative Archeological Survey Report

NASS                       National Accident Sampling System

NATTTC                 National Association of Transportation Technology Transfer Centers

NAV                        Navigation

NAWCA                  North American Wetlands Conservation Act

NB                           Northbound

NBI                          National Bridge Inventory, bridge data  supplied by states for the NBIS  (see also BMS)      

NBIS                        National Bridge Inspection Standards, are minimum requirements for inspection standards

National Bridge Inventory System

NBS                         National Bureau of Standards

NBSSR                     Noise Barrier Scope Study (or Summary) Report for sound wall projects

NCAC                      National Crash Analysis Center

NCAPA                    Northern California Asphalt Producers Assoc.

NCAT                      National Center for Asphalt Technology

NCCER                    National Council for Civil Engineering Research

NCEER                    National Center for Earthquake Engineering Research

NCHRP                    National Cooperative Highway Research Program

NCPP                       National Center for Pavement Preservation

NCSL                       National Conference of State Legislatures

ND                           Negative Declaration, None Detected (water qual)

NDAA                     Natural Disaster Assistance Act

NDI                         Non-Industrial Disability Insurance        

NDSP                       National Dam Safety Program

NDT                        Non-Destructive Testing

NE                           no effect

NEAR                      National Emergency Aid Radio

NEDS                      National Emissions Data System

NEEP                       National Experimental and Evaluation Program

NEHRP                    National Earthquake Hazards Reduction Program

NEIS                        National Environmental Information Service

NEMA                     National Electrical Manufacturers Association

NEPA                      National Environmental Policy Act (1969)- all Fed. funded projects require Fed. review

NES/BA                   Natural Environmental Survey / Biological Assessment; Evaluation of native species and habitat found in project study area.

NESHAP                  National Emission Standards for Hazardous Air Pollutants

NET                         National Emissions Trends Inventory

NFIP                        National Flood Insurance Program

NFPA                       National Fire Prevention Association

NGS                         National Geodetic Survey

NGVD                     National Geodetic Vertical Datum

NHI                         National Highway Institute                      

NHPA                      National Historic Preservation Act,

Federal, 1966, esp. section 106. See also State Public Resources Code Sections 5024 and 5024.5

NHPN                      National Highway Planning Network

NHS                         National Highway System

NHSB                      National Highway Safety Bureau

NHTSA                    National Highway Traffic Safety Administration

NIA                         National ITS Architecture

NICET                     National Institute for Certification in

Engineering Technologies

NIH                         National Institutes of Health

NII                           National Information Infrastructure (ITS)

NIMBY                    Not In My Back Yard                             

NIOSH                     National Institute for Occupational Safety and Health

NIPC                        National Infrastructure Protection Center (FBI)

NIST                        National Institute of Standards and Technology

NLAA                      Not Likely to Adversely Effect

NLT COB                No Later Than Close Of Business

NMCSP                    National Motor Carrier Safety Program   

NMFS                      National Marine Fisheries Service

NMSL                      National Maximum Speed Limit

NO                           Nitric Oxide

NOA                        Naturally Occurring Asbestos;   Notice of Arrival

NOAA                     National Oceanic and Atmospheric Administration

NOAEL                   no-observed-adverse-effect level

NOEL                      No Observable Effect Level

NOC                        Notice of Construction

NOCC                      Notice of Construction Completion

NOD                        Notice of Determination

(CEQA – project approval)

NOI                         Notice of Intent

(NEPA process, notice placed in Federal Register

advising public that EIS will be prepared for a project)

NOL                        Naval Ordinance Laboratory

NOP                         Notice of Preparation

(CEQA – notice that EIS will be prepared)

NOPR                      Notice Of Proposed Rulemaking

NOS                         National Oceanic Survey                         

n.o.s.                       not otherwise specified

NOT                        Notice of Termination

N2O                         Nitrous Oxide

NOx                        Nitrogen Oxides

NORM                     Naturally Occurring Radioactive Material

NPDES                    National Pollutant Discharge Elimination System

(revised, thanks to Mary MacGillivray,  District 7 Office of Project Studies)


NPHQ                      National Partnership for Highway Quality

NPRM                      Notice of Proposed Rule Making

NPS                         National Park Service              

                Non-point Source

NRC                         National Research Council

NRCS                       Natural Resources Conservation Service,

formerly SCS

NRCP                       Non Reinforced Concrete Pipe                

NRDC                      Natural Resources Defense Council

NRHP                      National Register of Historic Places

NRI                          National Resources Inventory

NRVMA                  National Roadside Vegetative Management Association

NS                           Non-Regulatory Supplement

NSF                         National Science Foundation

NSIS                        National Safety Information Systems

NSPE                       National Society of Professional Engineers

NTCIP                     National Transportation Communications

for ITS Protocol

NTI                          National Transit Institute        

National Toxics Inventory      

NTIS                        National Technical Information Service

NTN                        National Truck Network

NTP                         Notice To Proceed,

National Transportation Policy,

National Toxicology Program

NTPAW                   National Transportation Public Affairs Workshop

NTR                         New Technology and Research

NTSB                       National Transportation Safety Board

NTU                        Nephelelometric Turbidity Units

NURP                      Nationwide Urban Runoff Program

NWI                         National Wetland Inventory

NWP                        Nation Wide Permit (Section 404)           


OA                           Obligation Authority (Federal, $/year)    

OAQPS                    Office of Air Quality Planning and Standards, U.S. EPA

OBM                        Office of Business Management

OBS                         Organization Breakdown Structure

OBRA90                  Omnibus Budget Reconciliation Act of 1990

OC                           Over-crossing

OCP                         Office of Community Planning

OCTA                      Orange County Transportation Authority

O&D survey            Origin and Destination

O&M                       Operation and Maintenance

OE                           Office Engineer,    Operating Expense

OEA                        Office of External Audits,       

Office of Energy Assessments,

Office of Environmental Analysis

OECA                      Office of Enforcement and Compliance Assurance (U.S. EPA)

OEM                        Original Equipment Manufacturer           

OES                         Office of Emergency Services

OFCCP                     Office of Federal Contract Compliance Programs

OGAC                      Open Graded Asphalt Concrete

OGAC(R)                                 Open Graded Asphalt Concrete (Rubberized)

OH                           Overhead

OHP                         Office of Historic Preservation (Cal.)

OHWM                    Ordinary High Water Mark

OIG                         Office of the Inspector General

OIP                          Order of Immediate Possession

OJT/SS                     On the Job Training/Supportive Services

OLP                         Office of Local Programs, @ HQ;

admin of Fed. Aid & Local Assist. Now DOLA

OJT                          On-the-job training

OMB                        Office of Management and Budget

OPA                         Other Principal Arterial

OPEC                       Organization of Petroleum Exporting Countries

OPO                         Office of Personnel Operations

OPPD                       Office of Project Planning and Design     

OPPTS                     Office of Prevention, Pesticides,

and Toxic Substances (U.S. EPA)

OPR                         Office of Planning and Research (governor’s)

ORC                         Organizational Review Committee

ORCP                       Oval Reinforced Concrete Pipe

OREA                      Office of Real Estate Appraisers

OSC                         Office of Structure Construction

OSHA                      Occupational Safety and Health Administration  (U.S.)

OSI                          Open Systems Interconnection (ITS)

OSM&I                    Office of Structures and Maintenance Inspection

O3                            Ozone

OST                         Office of the Secretary of Transportation;  

Out of State Travel

OT                           Overtime

OTI                          Office of Traffic Improvement

OTP                         Operational Test Plan (ITS)

OTS                         Office of Traffic Safety

OWM                       Office of Wastewater Management (EPA)

OWP                        Overall Work Plan or Program                


P2                            Pollution Prevention                               

P3                            Primavera Project Planner (software)

P4                            Pollution Prevention Permitting Project

P&P                         Policy and Procedure Directive

P&R                         Park-and-Ride

PABS                       Programming and Budgeting System

PAC                         Policy Advisory Committee

PACT                       Program Accountability in Caltrans

PADP                       Ports Access Demonstration Project

PA&ED                   Project Approval & Environmental Document

PAI                          Principal Arterial – Interstate

PAMS                      Photochemical Assessment Monitoring Stations

PA/SI                       Preliminary Assessment / Site Investigation

PAP                         Perforated aluminum pipe

PAQSD                    Primary Air Quality Standards                                

PAR                         Personnel Action Request,      

Project Authorization Request,                

Project Approval Report         

PARF                       Position Action Request Form

PASSER II               Progression Analysis and Signal System Evaluation Routine

PATH                      Partners for Advanced Transportation

and Highways

PAYT                      Pay As You Throw

PB                            Paint binder;            Pull Box

Pb                            Lead

PBA                         Performance Based Asphalt

PBDEs                     polybrominated diphenyl ethers (see BFRs)           

PBMS                      Performance Based Measurements Systems

PBO                         Programmatic Biological Opinion

PBX                         Private Branch Exchange

PC                            Program Coordinator;              Prime Coat;                              Party Chief;              Personal Computer

PCA                         Portland Cement Association

PCBs                        Polychlorinated Biphenyls

PCC                         Point of compound curvature;

Portland Cement Concrete

PCCP                       Portland Cement Concrete Pavement,                                       Pre-stressed Concrete Cylinder Pipe

PCE                         Programmatic Categorical Exclusion (NEPA),


PCEPH                     Passenger Car Equivalents Per Hour

PCI                          Paint Condition Index;                                                             Precast/Prestressed Concrete Institute

PCi/L                       Pico Curies per Liter (water qual., radioactivity)

PCP                          Primary Care Physician

PCS                          Personal Communications System

PCSD                       President’s Council on Sustainable Development

PCR                         Project Change Request

PCS                          Project Control Survey;

Permit Compliance System

PCVC                       Point of compound vertical curve

PD                           Project Development

PDA                         Personal Digital Assistant                       

PDF                         Portable Document Format –

Adobe Acrobat stuff

PDH                         Professional Development Hour

PDM                        Probabilistic Dilution Model ; 

Precedence Diagramming Method

PDO                         Property Damage Only

PDPM                      Project Development Procedures Manual

PDRC                       Pavement Design and Rehabilitation Committee

PDS                         Project Development Support

PDT                         Project Development Team

PE                            Preliminary Engineering,          Polyethylene,                           Professional Engineer,             Project Engineer

PEAR                       Preliminary Environmental Assessment Report

PECG                       Professional Engineers in California Government

PEDP                       Professional Engineer Development Program

PEER                       Permit Engineering Evaluation Report

PeMS                       Performance Measurement System

PERMIS                  Personnel Employee Records for the Management Information System 

Permit 106               Review process for the National Historic Preservation Act

Permit 1601             A streambed alteration agreement for U.S. Department of Fish & Game

Permit 4(f)               Use of parkland Permit

404 Permit               issued by the U.S. Army Corps of Engineers

Permit 7                   Pertains to the Endangered Species Act

PERS                       Public Employee Retirement System 

PERT                       Project Evaluation and Review Technique

PES                          Preliminary Environmental Study

PET                         Project Estimating Tool

PF                            Planned Finish Date, Pay Factor

PFCs                        Perfluorinated Carbons

PFT                          Permanent Full Time

PG&E                      Pacific Gas and Electric

PHG                         Public Health Goal (water qual) set by CEPA

PHS                         U.S. Public Health Service

PI                             Permanent Intermittent

PIA                          Project ITS Architecture                          

PIAS                        Personal Information Access Subsystem (ITS)

PKm                        Post Kilometer

PLH                         Public Land Highway (Fed program)

PI                             Permanent Intermittent

(Civil Service Appointment),

preliminary investigation,       

Point of Intersection

PIB                          Personnel Information Bulletin

PIC                          Private Industry Council

PID                          Project Initiation Document

PIER                        Post-Implementation Evaluation Report

PIMS                       Personnel Information Management System

PIN                          Personal Identification Number,

Priority Index Number

(for barrier rail replacement projects)

PIO                          Public Information Officer

PIP                           Payroll Input Process, Project Initiation Proposal

PISA                        Project Information System & Analysis,

or Administration                                   

PK                           Parker-Kalan Nail

P/L                           Property line

PL                            Project Level Assessment

PLA                         Project Labor Agreement

PLP                          Personal Leave Program

PLUM                      Projected Land Use Model

PM                           Project Manager;   Post Mile; 

Preventive Maintenance;   Particulate Matter

PMBOK                   Project Management Body of Knowledge

PMCS                      Project Management Control System

PMDW                     Project Management Data Warehouse

PMI                         Project Management Institute

PMP                         Perforated Metal Pipe;  

Project Management Professional

PMPM                     Project Management Procedures Manual

PMR                        Position Management Report

PMS                         Pavement Management System;    

Parking Management System (ITS)

PMSU                      Project Management Support Unit

PM-10                     Particulate Matter 10 microns or smaller

PN                           Paving Notch

PO                           Purchase Order

POC                         Pedestrian Over-Crossing;      

Point on (horizontal) curve

POE                         Port of Entry

POGO                      Privately-Owned/ Government-Operated


PONTIS                   AASHTO supported bridge management program                                                                                                                                                   Polycyclic Organic Matter

POP                         Post Office Protocol

POP                         Purpose of Project

POS                         Point Of Service health plan

POT                         Point on tangent

POVC                      Point on vertical curve

P&P                         Policy & Procedure

ppb                          Parts Per Billion

PPC                          Plastic Pipe Culvert

PPDG                       Project Planning and Design Guide

PPE                          personal protective equipment

PPIC                        Public Policy Institute of California

PPM                         Planning, Programming & Monitoring,

Policy and Procedures Memorandum     

ppm                         Parts Per Million

PPNO                       Planning and Programming Number

PPO                         Preferred Provider Organization

PPT                          Permanent-Part Time (Employee)

ppt                           part per trillion

PQS                         Professionally Qualified Staff

PR                            Project Report

P&R                            Park and Ride

PRC                         Point of Reversing Curve

Prop 116                 State bicycle program

PRF                          Pavement Reinforcing Fabric

PRISM                     Performance and Registration Information System Management (not PRSM)

PR2/2A                    Fed/State supplemental agreement and modification to agreement (being phased out)

PRS                          Performance Related Specifications

PRSM                      Project Resources and Schedule Management

(not PRISM)

PRVC                       point of reverse vertical curve

PS                            Planned Start Date

PSA                         Program Supplemental Agreement;      

Precursor System Architecture (ITS)

PSCS                        Project Schedule and Control System

PSDP                       Planning Staff Development Program


PSI                           Preliminary Site Investigation;

pounds per square inch

                                Pollutant Standards Index

psig                          Pressure Per Square Inch Gauge

PSM                         Point Source Monitoring

PSP                          Pedestrian Safety Program;     

perforated steel pipe

PSR                          Project Study Report for STIP projects, preprogramming information.

PSS                          Personnel Services Specialist

PSSR                        Project Scoping Summary Report

for SHOPP projects

PSTIP                      Proposed State Transportation Improvement Program

PSTN                       Public Switched Telephone Network

PTA                         Public Transportation Account;

the major State account for mass transportation

PTMS                      Public Transportation Management System

PTMISEA                   Public Transportation Modernization,                     Improvement, and Service Enhancement Account

P2P TCD                  Peer-to-Peer program on Traffic Control Devices (FHWA)

PTS                          Positive Train Separation (ITS)

PUC                         Public Utilities Commission

PVC                         Polyvinyl Chloride

PVEA                      Petroleum Violation Escrow Account

PY                           Person – Year (1758-1800 hours)

PYE                         Person Year Equivalent

PYPSCAN                Person Year Project Scheduling & Cost Analysis


QAP                         Quality Assurance Program,                                                    Qualification Appraisal Panel  

QA/QC                     Quality Assurance/ Quality Control

QBS                         Qualification Based Selection

QCIP                        Quality and Continuous Improvement Program

QCRP                       Quality Control Review Process

QIP                          Quality Improvement Plan

QoS                         Quality of Service                                   


RA                           Reasonable Alternative;   Regulatory Alternatives; Regulatory Analysis;   Remedial Action;

Resource Allocation;    Risk Analysis;

Risk Assessment

RABA                      Revenue Aligned Budget Authority, annual funding adjustment highway program to firewall level reflecting receipt estimates.                

RAC                         Rubberized Asphalt Concrete

                                Research Advisory Committee

RACM                     Reasonable Available Control Measures

(air qual.)

RAD                        Rapid Application Development,

Radiation Adsorbed Dose

RAM                        Responsibility Assignment Matrix

RAN                        Revenue Anticipation Note

RAO                        Regional Administrative Officer

RAP                         Relocation Assistance Program or Payments;                           Reclaimed Asphalt Pavement

RAPID                     Rural Agency Project Implementation District

RATP                      Regional Active Transportation Plan

RAQS                      Regional Air Quality Strategy

RAS                         Regional Arterial System         

RAW                        Revenue Anticipation Warrant (“bridge” loan)

RBS                         Resource Breakdown Structure

RCA                         Recycled Concrete Aggregate

RCM                        Reliability Centered Maintenance

RCP                         Reinforced Concrete Pipe

RCR                         Route Concept Report, part of planning process which provides a service concept

RCRA                      Resource Conservation and Recovery Act

R&D                        Remove & Dispose

RDO                        Regular Day Off

RDP                         Route Development Plan, part of planning process which provides alternatives

RDNA                      Recombinant DNA

RDS                         Radio Data Systems (ITS)

R&S                         Remove & Salvage

RE                           Resident Engineer

REMOVE                Reduced Motor Vehicle Emissions Program

REVISIT                  RBS Evaluation, Verification, Integration & Support Improvement Team

RFA                         Request for Authorization

RFB                         Request for Bid

RFG                         Reformulated Gasoline

RFP                         Request for Proposal

RFQ                         Request for Qualifications                                                       Request for Quotation

RFS                          Richmond Field Station (UCB)

RIA                          Regulatory Impact Analysis;    

Regional ITS Architecture

RICO                       Racketeer Influenced and Corrupt Organizations Act

RIFA                        Red Imported Fire Ant

RIP                          Regional Improvement Plan

RLF                         Red Legged Frog                                     

RM                          risk management

RMP                        Regional Mobility Plan

RNA                        Ribonucleic Acid

ROD                        Record of Decision

ROE                         Report of Expenditures

ROG                        Reactive Organic Gases

RRC                         Rural Residential Center                          

RRR                         Resurfacing (overlay), Restoration (to original condition), Rehabilitation (upgrade guardrail, widen shoulders, etc.)

R/S                           Resource / Schedule

RSP                          Roadway Safety Program (ATSSA)

RSPA                       Research and Special Programs Admin.

RSTP                       Regional Surface Transportation Program

RTIF                        Regional Transportation Impact Fee

RTIP                        Regional Transportation Improvement Program, 75% of STIP funds. List of projects submitted to CTC by RTPAs for seven year horizon, updated every two years.

RTL                         Ready To List

RTP                         Regional Transportation Plan,

Federally required 20-year plan by MPO’s, updated every 3-years

RTPA                       Regional Transportation Planning Agency,

State designated agency responsible for prep. of RTP & RTIP

RTS                         Remote Traveler Support Subsystem (ITS)

RSTP                       Regional Surface Transportation Program

RWQCB                   Regional Water Quality Control Board    


SAAMP                   Special Area Aquatic Management Plan  

SAB                         Seismic Advisory Board

SACOG                    Sacramento Area Council of Governments

SADBU                    Small And Disadvantaged Business Utilization

SAE                         Society of Automotive Engineers

SAFEs                     Service Authorities for Freeway Emergencies

SAFETEA                Safe, Accountable, Flexible and Efficient Transportation Equity Act of 2003

SAIN                       Substance Abuse Information Network

SAM                        State Administrative Manual

SAME                      Society of American Military Engineers

SAMI                       Stress-Absorbing Membrane Interlayer  

SANBAG                 San Bernardino Associated Governments               

SANDAG                 San Diego Association of Governments

SAP                         Sampling and Analysis Plan

SAPA                       State Asphalt Paving Associations

SAVE                      Society of American Value Engineers     

SB                            Senate Bill

SBB&M                   San Bernardino Base and Meridian (surveying)

SB45                        1997; State increased authority of RTPA’s, etc. Est. current STIP process; timely use

SBS                          Sick Building Syndrome

SC                            Slow Curing;            Start Construction

SCADA                  Supervisory Control and Data Acquisitions 

SCAG                      Southern California Association of Governments

SCANDI                  Surveillance Control and Driver Information System

SCBT                       segmental concrete bridge technology

SCC                         self-consolidating concrete (use of plasticizers)

SCE                         Southern California Edison

SCEDCO                  Stanislaus County Economic Development Corporation

SCFM                      Standard Cubic Feet Per Minute

SCH                         State Clearing House

SCO                         State Controllers Office

SCOH                      Standing Committee on Highways

SCR                         State Controller’s Report      

SCS                          Soil Conservation Service (now NRCS)

SCSP                        Storm and Combined Sewer Program

SD                           Structurally Deficient (bridge),                

Standard Deviation

SDC                         Seismic Design Criteria

SDO                         Standards Development Organization

SDP                         Strategic Deployment Plan

SDWA                     Safe Drinking Water Act

SEA                         Systems Engineering Analysis

SEAC                       Sulfur Extended Asphalt Concrete

SEC                         U.S. Securities and Exchange Commission

SEP                          Special Emphasis Program

Special Experimental Project; (ex.: FHWA allowed states to evaluate the design-build method on an experimental basis through SEP-14.  

Section 4(f)             USDOT Act of 1966, Protects publicly owned parks, recreational areas, wildlife and water fowl refuges and land from historic sites

Section 7                 Of Endangered Species Act of 1973

Section 9                  Prohibited Acts

Section 10                                Habitat Conservation Plans

Section 106              National Historic Preservation Act of 1966. Protection of cultural resources and historic properties.

Section 130              Railroad / Highway At-Grade Crossings

Safety Program

Section 404              of the 1977 Federal Clean Water Act

SER                         Standard Environmental Reference

SF                            Scheduled Finish Date / Start-to-Finish;

Standard Form;        Superfund

SFOBB                     San Francisco-Oakland Bay Bridge         

SFP                          Single Focal Point

S&H Code               Streets & Highways Code – laws governing funding & development of projects

SHA                        State Highway Account; Major account for highways (gas tax & weight fees)

                                State Highway Agency

SHBSB                     State Historic Building Safety Board

SHELL                    Subsystem of Highways for the Movement of Extralegal Permit Loads

SHOPP                   State Highway Operation and Protection Program, four & ten-year capital improvement program for rehabilitation, safety, and operational improvements on state highways.

                                Cannot increase roadway capacity. SB 1435-Kopp

SHRP                       State Highway Research Program

SHS                         State Highway System

SHPO                       State Historic Preservation Officer

SHRC                       State Historical Resources Commission

SHWL                      Seasonal High Water Level

SI                             International System of Units

(The Modernized Metric System)

SI&A                       Structure Inventory and Appraisal

SIB                          State Infrastructure Bank

SIC                          Standard Industrial Classification,

Standard Industry Code

SIG                          Special Interest Group

SIGOP                     Signal Optimization

SIMS                       Sign Inventory Management System

SIP                           State Implementation Plan; air qual. Required by Fed, CAA of 1970. In order to be eligible for Fed $ projects must demonstrate conformity to SIP.

SISA                        Special In-grade Salary Adjustment

SJCOG                     San Joaquin Council of Government       

SJHTC                     San Joaquin Hills Transportation Corridor

SJVAPCD                San Joaquin Valley Air Pollution Control District

SLA                         Structures Local Assistance,                                                    Simbionese Liberation Army

(different people, same acronym)

SLAE                       Structure Local Assistance Engineer

SLAMS                    State and Local Air Monitoring Stations

SLIMS                     ?

SLC                         State Land Commission                          

SLD                         Sea Level Datum

SLIP                        Serial Line Internet Protocol

SLPDP                     State and Local Project Development Program

SLTC                       Soluble Threshold Limit Concentration (Cal)

SLTPP                     State Local Transportation Partnership Program State, discontinued)

SMARA                   Surface Mining and Reclamation Act (Calif.)

SMART                   Structure Maintenance Automatic Report Transmittal system

Goals: Specific, Measurable, Achievable, Realistic, Time limited.

SMBB                      single metal beam barrier

SMR                        Specialized Mobile Radio

SMS                         Highway Safety Management System

SMSA                      Standard Metropolitan Statistical Area

SMTP                      Simple Mail Transfer Protocol

SNAFU                    Situation Normal All Fouled Up (polite form)

SNAP                       Sonic Nap Alert Pattern

(Penn. Turnpike type rumble strip)

SNC                         Significant Noncompliance

SNMP                      Simple Network Management Protocol (ITS)

SO                           Sulfur Dioxide

SOAP                       Signal Operations Analysis Package

SOC                         Synthetic Organic Chemicals

SOF                         State Only Funding

SOFC                       solid oxide fuel cell, see APU

SONET                    Synchronous Optical Network (ITS)

SOQ                         Statement of Qualifications

SOV                         Single Occupancy Vehicle

SOW                        Statement of Work

SO2                          Sulfur Dioxide                                        

SOx                         Sulfur Oxides

SPB                          State Personnel Board

SPE                          Start Preliminary Engineering

SPI                           Schedule Performance Index

SP&R                       State Planning & Research

SR2S                     Safe Routes to Schools  program

(Fed) (est. by AB 1475, ext. by SB 10)

SPB                          State Personnel Board

SPMIT                     Statewide Project Management Improvement Team

SPRR                       Southern Pacific Railroad

SQL                         Standard Query Language

SR                            Sufficiency Rating (bridge) or State Route

SRF                          State Revolving (Loan) Fund  (Clean Water Act)

SROA                      State Restriction of Appointments           

SRP                          Secondary Road Plans                                            

SRT                         Slotted Rail Terminal

SRTP                       Short Range Transit Plans

SS                            Scheduled Start Date / Start-to-Start

SSE                          Separate State Estimate

SSA                         Sole Source Aquifer

SSB                          Scope, Schedule, and Budget

ssambn                    such sums as may be necessary

SSN                         Social Security Number

SSES                        Sewer System Evaluation Survey

SSO                         Sanitary Sewer Overflow

SSPP                        Structural Steel Plate Pipe

SSPs                        Standard Special Provisions

SSR                          Standard Speed Rail

SSTAC                     Social Service Transportation Advisory Council

STA                         State Transit Assistance;                                                          State funding for mass transit oper. & cap. Imp.,

                                By law, STA must receive 50% of PTA revenues

STA                         State Transportation Agency

STAA                      Surface Transportation Assistance Act of 1982

STANCOG               Stanislaus Council of Governments        

STAPPA                  State And Territorial Air Pollution Program Administrators

STBB                       Single Thrie Beam Barrier

STC                         State Training Center

STD                         Sate Transportation Department

STE                         State Transportation Enhancement

STEL                       short-term exposure limit

STIP                        State Transportation Improvement Program,

4-year list of projects approved by CTC and is a list of major projects.

ITIP (25%) & RTIP (75%)

STA                            State Transit Assistance (fund)

STC                         State Training Center

STMF                      Simple Transportation Management Framework (ITS)

STMP                      Simple Transportation Management Protocol (ITS)

STO                         Smart Testing Operations

STP                          Surface Transportation Program (Fed)

(Formerly FAU or FAS)

                                Study;  Standard Temperature and Pressure

STPP                        Surface Transportation Policy Project

STPL                       Surface Transportation Program (Local)

STRAHNET             STRAtegic Highways NETwork

STRUDL                  Structural Design Language (computer program)

STURAA                 Surface Transportation and Uniform Relocation Assistance Act (1987)

SU                           Source Unit

SUDP                       Specific Urban Development Plan

SULEV                    super ultra low emission vehicles

Superpave                                Superior PERforming asphalt PAVEments

SUSMP                    Standard Urban Stormwater Mitigation Plan

SV                           Schedule Variance

SW                           Sidewalk  Storm Water

SWAG                     Stuff We All Get

Scientific Wild Ass Guess

(not CT. We don’t guess, we know)

SWDR                      Storm Water Data Report

SWITRS                   Statewide Integrated Traffic Records System

SWLF                      Solid Waste Landfill

SWMP                     Storm Water Management Plan

SWMU                     Solid Waste Management Unit

SWPPP                     Storm Water Pollution Prevention Plan

SWQAG                   Storm Water Quality Assessment Guide 

SWRCB                    State Water Resources Control Board

SWTF                      Storm Water Task Force

SYSOP                     Systems Operator                   



T2                            Technology Transfer

TA                           Technical Advisory

TAC                        Technical Advisory Committee

TAC/ALC                Technical Advisory Committee for Agricultural Land Conservation

TAG                        Technical Advisory Group

TAM                        Transportation Asset Management

(FHWA, resource allocation strategies)

TAS                         Toll Administration Subsystem

TAR                         Tribal Authority Rule

TASAS                    Traffic Accident Surveillance and Analysis System

TAT                         Tire Anchor Timber Wall

TAU                        Temporary Authorization Appointment

TB                           Top of Bank                           

TBB                         Thrie beam barrier

TBC                         Top Back of Curb

TC                           Top of Curb

TCA                         Transportation Corridor Agency

TCAG                         Tulare County Association of Governments

TCAT                          Tulare County Area Transit

TCB                         Traffic Control Box

TCCC                       Transportation Curriculum Coordination Council

(FHWA led pooled fund study for training management and development under NHI)

TCDD                      Dioxin (Tetrachlorodibenzo-p-dioxin)

TCDH                      Traffic Control Devices Handbook

TCE                         Trichloroethylene

TCI                          Transit Capital Improvement program

TCIP                        Transit Communications Interface Profiles (ITS)

TCLP                       Toxicity Characteristic Leaching Procedure (Fed)

TCM                        Transportation Control Measure

 – to reduce pollution emissions.

TCP                         Traffic Control Plan

TCP/IP                     Transmission Control Protocol/Internet Protocol

TCR                         Transportation Concept Report;

Transportation Corridor Report

TCRA                      Traffic Congestion Relief Act (AB2928)

TCRF                       Traffic Congestion Relief Fund

TCRP                      Transportation Congestion Relief Program,                                         Transit Cooperative Research Program

TCS                         Transportation Control Strategy,             

Traffic Controller Synchronizer,

Traffic Control Systems,                          Transportation Corridor Study

Toll Collection Subsystem

T&D                        Training and Development

TDA                        Transportation Development Act; State law, 1971, 0.25% sales tax for transit & bike

TDD                        Telecommunications Device for the Deaf

TDIP                        Technology Deployment Initiatives and Partnerships                                             

TDM                        Transportation Demand Management;   

Travel Demand Management

TDMA                     Time Division Multiple Access (ITS)

TDP                         Transportation Development Plan

(Formerly RDP),     

Tons Per Day (air qual.)

TDT                         Transportation Data Template

TDS                         Total Dissolved Solids

TE                           Transportation Engineer

T&E                        Threatened and Endangered (species)

TEA                         Transportation Enhancement Act

or Activities program (Fed)

TEAM                     Together Everybody Achieves  More (not CT)

TEC                         Travel Expense Claim; Total Escalated Cost

TEA-21                   Transportation Equity Act for the 21st Century (Fed); 1998-2004

TeNS                       Technical Noise Supplement (

TERO                      Tribal Employment Rights Office or Ordinances

TF                            Total Float / Target Finish Date

TFHRC                    Turner-Fairbank Highway Research Center (McLean, VA)

TFMTAC                Transportation Forecasting Model Technical Advisory Committee 

THC                         Total Hydrocarbons

THM                        Trihalomethanes

TI                            Traffic Index, = 9.0(ESAL/1,000,000)^0.119; Temporary Intermittent

TIC                          Technical Information Center

TID                          Turlock Irrigation District                       

TIE                          Toxicity Identification Evaluation

TIES                        Total Integrated Engineering System

TIF                          Transportation Investment Fund;

                Truck Inspection Facility

TIFIA                      Transportation Infrastructure Finance

& Innovation Act

TIGER                     Topologically Integrated Geographic Encoding Referencing System

TIP                          Transportation Improvement Program

TIS                          Travelers Information System

TIME                          Tulare Intermodal Express (Tulare Transit)

TISE                        Take It Somewhere Else

TISP                        The Infrastructure Security Partnership

(Congress of Infrastructure Security for the Built Environment)

T&L                        Time and Labor

TL                           Transportation Laboratory

TLI                          Terrain Line Interpolation

TLV                         Threshold Limit Value

TMA                        Transportation Management Assoc. or Area           

TMC                        Transportation Management Center;                                        Traffic Management Center

TMCC                      Truck-Mounted Crash Cushion

TMDD                     Traffic Management Data Dictionary (ITS)

TMDL                     Total Maximum Daily Load; ….Limit

TMIP                       Travel Model Improvement Program

TMP                        Transportation Management Plan

TMS                        Traffic Management (or Monitoring or Maintenance) System or Subsystem, see TSM

TNT                         Trinitrotoluene

TOC                         Traffic Operations Center;      

Total Organic Carbon/ Compound, Section 4(f)

TOD                        Transit Oriented Development

TOMIS                    Traffic Operations Management Information Service

TON                        Threshold of Odor Number (water qual)

TOPICS                   Traffic Operations Program to Improve

Capacity & Safety

TOPSS                     Transportation Operations and Project Support System (New time system)

TOS                         Traffic Operations System

TOT/MVM              Total Accidents Per Million Vehicle Miles

TP                            Turning Point (surveying)

TPB                         Treated Permeable Base                          

TPC                         Technical Planning Committee

TP&D                      Transportation Planning & Development account

TPL                         Truck Passing Lane

TPM                        Transportation Planning Manual

TQM                        Total Quality Management

TRAMS                   Transportation Accounting & Management System: developed to meet the Department’s reporting needs and to respond effectively to the requirements placed on the Department as a result of the implementation of the California Fiscal Information System.

TRAQ                      Transportation Air Quality Center

TRARR                    Traffic on Rural Roads

TRB                         Transportation Research Board

(formerly Highway Research Board)

TRIP                        The Road Information Program

TRIS                        Transportation Research Information System (UCB), see C-TRIS

TRIS                        Transportation Research Information System;  Toxic Release Inventory System

TRMC                      Transit Management Center                    

TRMS                      Transit Management Subsystem

TRRL                       Transportation Road Research Laboratory

TRS                         Time Reporting System (history)

TRSP                       Traffic-Responsive Plan (Generation)

TRT                         Technical Review Team          

Transportation Research Thesaurus

TRVS                       Transit Vehicle Subsystem (ITS)

TSC                         Transportation Systems Center

TSCA                       Toxic Substances Control Act

TSDP                       Transportation System Development Plan

TSDF                       Treatment, Storage and Disposal Facilities

TSIP                        Transportation Systems Information Program

TSM                        Transportation System Management program (State, discontinued) See TMS

TSN                         Transportation System Network

TSO                         Time-share operation

TSP                          Total Suspended Particulates,

Traffic Synchronization Projects

TSS                          Total Suspended Solids

TSSDRA                   Transit System Safety, Security and Disaster  Response Account

TSSS                        Total Station Survey System

TTHM                     Total Trihalomethane

TTLC                       Total Threshold Limit Concentration

TTIA                       Technology Transfer Improvements Act of 1995

TTN                         Technology Transfer Network

TTP                         Technology Transfer Program (UCB)

TTY                         Teletype

TUF date                  Timely Utilization of Funding?

TVA                        Tennessee Valley Authority

TVOC                      Total Volatile Organic Compounds

TWLTL                   Two Way Left Turn Lane       


UA                           Urbanized Area                                       

UAA                        Use Attainability Analysis (water qual)

UAM                       Urban Air-shed Model

UAQI                       Uniform Air Quality Index

UART                      Universal Asynchronous Transmitter Receivers (Computer Chip)

UC                           Under-crossing

UCITS                     University of California Institute of Transportation Studies

UCP                         Unified Certification Program (DBE)

UCS                         Unconfined Compressive Strength

UFAS                       Uniform Federal Accessibility Standards

UG                           Underground

UGB                        Urban Growth Boundaries

UHPC                      Ultra High Performance Concrete

UIT                          ultrasonic impact treatment, for welds

UITP                        International Union of Public Transport

ULEV                      Ultra Low Emission Vehicles

UMRA                     Un-funded Mandates Reform Act

UMTA                     Urban Mass Transit Agency, ……Administration

UNESCO                 United Nations Educational, Scientific and Cultural Organization

UNPARs                  Unprogram Project Approval Requests

UP                           Underpass

URISA                     Urban and Regional Information Systems Assoc.

URL                         Universal Resource Locator;                                                    Universal Reader Language

UROAD                   Urban Mass Transportation Agency

USA                         United States of America;                                                        Underground Service Alert

USC                         United States Code; Unified Soil Classification

USC&GS                 United States Coast and Geodetic Survey                

USCE                       United States Corps of Engineers (ARMY)             

USCG                      United States Coast Guard

USDA                      U.S. Department of Agriculture

USFS                       U.S. Forest Service

USFWS                    United States Fish & Wildlife Service

USGS                       United States Geological Survey

USM                        Urban Simulation Model                         

USPLS                     United States Public Land Surveys

USPS                       US Postal Service

USR                         User Service Requirement

UST                         Underground Storage Tank

USTIP                      Updated State Transportation Improvement Program

USTR                       Unites States Trade Representative

UTC                         Ultimate Transportation Corridor

UTCS                       Urban Traffic Control System

UTPS                       Urban Transportation Planning System

UUA                        use attainability analysis,

(EPA, water body recreational use.)

UV                           Ultraviolet

UZA                        Urbanized Area                                       


VA                           Veterans Administration          Value Analysis

VC                           Vertical Curve

V/C                          Volume /Capacity ratio

VCM                        Vertical Control Monumentation

VDT                        Video Display Terminal

VE                           Value Engineering

VECP                       Value Engineering Change Proposal

VELB                      Valley Elderberry Longhorn Beetle

(lives in stems > one inch)

VEP                         Value Engineering Proposal

VFC                         Vehicle Fuel Consumption      

VGA                        Virtual Graphics Array

VHT                        Vehicle-Hours of Travel

VISTA                     Video Information System Training Assoc., Inc.

VKT                        Vehicle Kilometers Traveled

VMS                        Variable Message Sign

VMT                        Vehicle Miles Traveled,

common measurement for driving demand

VOC                        Volatile Organic Compounds;

Volume and Occupancy Control (Constant)

VOS                         Vehicle Operating Survey

VRC                         Vehicle/Roadside Communications (ITS)


WADS                     Wide Area Detection Systems

WAN                       Wide Area Network

WASHTO                Western Association of State Highway & Transportation Officials

WBE                        Woman-owned Business Enterprise

WBS                        Work Breakdown Structure

WC                          Worker’s Compensation

WCC                        Work Category Code

WCT                           Woodlake City Transit

WDT                        Weight-Distance Tax

WEN                        Workload Estimating Norm

WES                        Waterways Experiment Station

WET                        Wetland Evaluation Technique

WGRA                     Western Governmental Research Association

WHO                       World Health Organization / United Nations

WIB                         Workforce Investment Board

WPA                        watershed protection approach

WPCM                     Water Pollution Control Manager

WPCP                      Water Pollution Control Program

WQBEL                   water quality-based effluent limit

WQC                        Water Quality Criteria

WQI                         Watershed Quality Index                        

WQS                        water quality standard                             

WS                           White Stripe

WSP                         Welded Steel Pipe

WSRA                      Wild and Scenic Rivers Act

WSPRO                    Water Surface Profile

WSTP                      Wastewater Sewage Treatment Plant

WWBE                     White Women-owned Business Enterprise

WWTP                     Wastewater Treatment Plant

WWW                      World-Wide Web

WYSIWYG              What you see is what you get

WZS                        Work Zone Safety

WZTC                      Work Zone Traffic Control     


XPM                        Expert Project Management                    


YARTS                    Yosemite Area Regional Transportation System

YATI                       Yosemite Area Traveler Information

YS                           Yellow Stripe

Y2K                         The Year 2000 Computer Problem


ZBB                         Zero Based Budgeting              : process requiring justification of every dollar (and person-year) of an organization’s/program’s proposed budget for the budget year. The assumed program level for the budget year is zero, thus intensive justification and critical review of all components is required before approval            

ZEV                         Zero Emissions Vehicle

ZRL                         Zero Risk Level





AADT Annual Average Daily Traffic

AASHTO American Association of State Highway and Transportation Officials

AB (California) Assembly Bill

AB 32 The Global Warming Solutions Act of 2006

ADA Americans with Disabilities Act

ADT Average Daily Traffic

ALUC Airport Land Use Commission

APS Alternative Planning Strategy

ATP Active Transportation Program

ARB Air Resources Board

ARRA American Recovery and Reinvestment Act of 2009

BACM Best Alternative Control Measure

BNSF Burlington Northern Santa Fe (Railroad)

BRT Bus Rapid Transit

BTA Bicycle Transportation Account

CAA United States Clean Air Act of 1970

CALCOG California Association of Councils of Governments

CALTRANS California Department of Transportation

CALUP California Airport Land Use Plan

CDF California Department of Forestry

DFG California Department of Fish & Game

CEQA California Environmental Quality Act of 1970

CHP California Highway Patrol

CHSRA California High Speed Rail Authority

CIP Capital Improvement Program

CMA Congestion Management Agency

CMAQ Congestion Mitigation and Air Quality

CMP Congestion Management Program

CMS Congestion Management System

CNDDB California Natural Diversity Database

CNG Compressed Natural Gas

CO Carbon Monoxide

COG Council of Governments

COLT City Operated Local Transit (Porterville)

CTC California Transportation Commission

DART Dinuba Area Regional Transit

DOF Department Of Finance

DOT Department Of Transportation (Federal)


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EIR Environmental Impact Report

EIS Environmental Impact Statement

EMFAC “Emissions Factor” – California’s Air Pollution Model

EPA Environmental Protection Agency

FAA Federal Aviation Administration

FCAA Federal Clean Air Act

FHWA Federal Highway Administration

FTA Federal Transit Administration

FTIP Federal Transportation Improvement Program

FY Fiscal Year

GIS Geographic Information Systems

GPS Global Positioning System

HCD California Housing and Community Development Department

HCM Highway Capacity Manual

HCP Habitat Conservation Plan

HOV High-Occupancy Vehicle

HPMS Highway Performance Monitoring System

IIP Interregional Improvement Program

IRR Indian Reservation Roads

IRRS Interregional Road System

ISR Indirect Source Review

ISTEA Intermodal Surface Transportation Efficiency Act

ITIP Interregional Transportation Improvement Program

ITS Intelligent Transportation Systems

JPA Joint Powers Agreement (or Authority)

LNG Liquefied Natural Gas

LOS Level of Service

LRT Light-Rail Transit

LTF Local Transportation Fund

MAP-21 Moving Ahead for Progress in the 21st Century

MOU Memorandum of Understanding

MPO Metropolitan Planning Organization

NARC National Association of Regional Councils

NEPA National Environmental Policy Act of 1969

NHS National Highway System

NOx Nitrogen Oxides

NOA Notice of Availability


8 – 3

NOP Notice of Preparation

O3 Ozone

OWP Overall Work Program

PAC Policy Advisory Committee

PA&ED Project Approval & Environmental Document

PM2.5 Particulate Matter <2.5 microns in size

PM10 Particulate Matter <10 microns in size

PMS Pavement Management System

PSR Project Study Report

RACM Reasonable Alternative Control Measure

R&D Funds Research and Development Funds

RHNA Regional Housing Needs Assessment

RIP Regional Improvement Program

ROG Reactive Organic Gases

ROW Right-Of-Way

RSTP Regional Surface Transportation Program

RTAC Regional Targets Advisory Committee

RTIP Regional Transportation Improvement Program

RTP Regional Transportation Plan

RTPA Regional Transportation Planning Agency

SAFETEA-LU Safe, Accountable, Flexible, and Efficient Transportation Equity Act – A Legacy

for Users

SB Senate Bill (California)

SCS Sustainable Communities Strategy

SHOPP State Highway Operation & Protection Plan

SIP State Implementation Plan

SJVAB San Joaquin Valley Air Basin

SJVMIP San Joaquin Valley Model Improvement Program

SOx Sulfur Oxides

SOV Single-Occupancy Vehicle

SRTP Short-Range Transit Plan

SSTAC Social Services Transportation Advisory Council

STA State Transit Assistance

STIP State Transportation Improvement Program

SJVAPCD San Joaquin Valley Air Pollution Control District

TAC Technical Advisory Committee

TAZ Transportation Analysis Zone

TCAG Tulare County Association of Governments

TCAT Tulare County Area Transit

TCM Transportation Control Measure


8 – 4

TCRP Traffic Congestion Relief Program

TDA Transportation Development Act

TDM Transportation Demand Management

TDP Transit Development Plan

TE Transportation Enhancement

TIME Tulare Intermodal Express

TIP Transportation Improvement Program

TMA Transportation Management Agency

TPA Transportation Planning Agency

TPP Transit Priority Project

TSM Transportation Systems Management

UP Union Pacific (Railroad)

VMT Vehicle Miles Traveled

VOC Volatile Organic Compounds

WE Work Element


8 – 5





Active Transportation Program (ATP)

The Active Transportation Program was created by Senate Bill 99 (Chapter 359, Statutes of

2013) and Assembly Bill 101 (Chapter 354, Statutes of 2013) to encourage increased use of

active modes of transportation, such as biking and walking.

Americans with Disabilities Act (ADA)

Federal legislation defining the responsibilities of and requirements for transportation providers

to make transportation accessible to individuals with disabilities.

Advance Construction

Smoothing out project programming levels by using State resources to fund projects in advance

of receiving Federal participating funds through the annual Obligation Authority (OA).

Advance Construction (Retirement of/Conversion of)

Allowance for (reduction in) current-year Federal Obligation Authority (OA) reimbursement for

which State resources were expended in advance.

Aeronautics Account

Funds the Aeronautics Program which promotes the use of existing airports by assuring adequate

air service for small and medium-sized communities, overseeing a statewide system of safe and

environmentally compatible airports that are integrated with other surface transportation systems

and evaluation of statewide aviation needs. Principle sources of funds: a seventeen-cent-pergallon

excise tax on aviation gasoline and a two-cent-per-gallon excise tax on jet fuel. Supports

the: “Fair Share” transfer to the State Highway Account equal to a pro-rata portion of planning

costs; state operations, or the cost of administering the Aeronautics Program; reports and studies

required by Public Utilities Code 21632; grants to Local Agencies with qualifying airports;

Acquisition and Development (A&D) for aeronautics facilities.


The distribution of funds to a specific project or group of projects, or statutory distribution based

on formula.

Allocation Capacity

The level at which state/federal capital project costs can be programmed using cash resources

available (determined through the fund estimate process).

Alternative Fuels

The Energy Policy Act of 1992 defines alternative fuels as methanol, denatured ethanol, and

other alcohol; mixtures containing 85 percent or more (but not less than 70 percent as


8 – 6

determined by the Secretary of Energy by rule to provide for requirements relating to cold start,

safety, or vehicle functions) by volume of methanol, denatured ethanol, and other alcohols with

gasoline or other fuels. Includes compressed natural gas, liquid petroleum gas, hydrogen, coalderived

liquid fuels, fuels other than alcohols derived from biological materials, electricity, or

any other fuel the Secretary of Energy determines by rule is substantially not petroleum and

would yield substantial energy security and environmental benefits.

American Recovery and reinvestment Act of 2009 (ARRA)

The American Recovery and Reinvestment Act of 2009 (ARRA), commonly referred to as the

Stimulus or The Recovery Act, was an economic stimulus package enacted by the 111th United

States Congress in February 2009 and signed into law on February 17, 2009,

by President Barack Obama.


Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991 established the annual

apportionment levels for each Federal funding category: Surface Transportation Program (STP);

Congestion Mitigation & Air Quality (CMAQ); Bridge Replacement (BR). Funding can remain

available for use up to 4 years.

Area Sources

Small stationary and non-transportation sources of air pollution that are too small or numerous to

count as point sources for individual control, such as dry cleaners.

Article XIX

An Article of the State Constitution. Designates how State taxes on motor fuel and motor

vehicles may be used for streets, highways and fixed guideway transit projects. The Article

excludes funding for maintenance and operating costs for mass transit power systems and mass

transit passenger facilities, vehicles, equipment, and services.

Attainment Demonstrations

A State Implementation Plan (SIP) revision which describes how an area will meet air quality

standards before its attainment date.

Average Annual Daily Trips (AADT)

The total volume of traffic on a highway segment for one year divided by the number of days in

the year.


Build/No-Build Test

A conformity test which demonstrates that the total emissions from the projects in a

transportation plan or program (the “build” scenario) will be lower than emissions that would

result if the projects were not build (the “no-build” scenario).


8 – 7

Bus Rapid Transit (BRT)

Bus rapid transit (BRT, BRTS) is a bus-based mass transit system. A true BRT system generally

has specialized design, services and infrastructure to improve system quality and remove the

typical causes of delay. Sometimes described as a “surface subway”, BRT aims to combine the

capacity and speed of light rail or metro with the flexibility, lower cost and simplicity of a bus



Carbon Monoxide (CO)

A colorless, odorless gas that largely results from incomplete combustion of fuel. CO is one of

three pollutants linked to motor vehicle emissions that are regulated by the Clean Air Act.

California Environmental Quality Act (CEQA)

1970 act which requires that state agencies regulate activities with major consideration for

environmental protection.

Capital Outlay

Cost of construction of transportation facilities and acquisition of right of way. Excludes

engineering and right of way support costs.

Clean Air Act of 1970

The Clean Air Act is a United States federal law designed to control air pollution on a national

level. It requires the Environmental Protection Agency (EPA) to develop and

enforce regulations to protect the public from airborne contaminants known to be hazardous to

human health

Clean Air Act Amendments

The original Clean Air Act was passed in 1963, but the national air pollution control program is

actually based on the 1970 version of the law. The 1990 Clean Air Act Amendments are the

most far-reaching revisions of the 1970 law. The 1990 Clean Air Act is the most recent version

of the 1970 version of the law. The 1990 amendments made major changes in the Clean Air Act.

Code of Federal Regulations

A compilation of the general and permanent rules of the executive departments and agencies of

the Federal Government as published in the Federal Register. The code is divided into 50 titles

that represent broad areas subject to Federal regulation. (DOE5).

Compressed Natural Gas (CNG)

Natural gas compressed to a volume and density that is practical as a portable fuel supply. It is

used as a fuel for natural gas-powered vehicles.


8 – 8

Conformity Finding

An MPO verification that the emissions produced by a plan or program are consistent with the

goals of a SIP. Conformity is generally determined by either an emissions budget test or a

“build/no-build” test, and a demonstration that TCMs will be implemented in a timely fashion.

Congestion Management Process (CMP)

Systematic process for managing congestion. Provides information on transportation system

performance and finds alternative ways to alleviate congestion and enhance the mobility of

people and goods, to levels that meet state and local needs.

Congestion Mitigation & Air Quality (CMAQ)

A new funding program established by ISTEA specifically for projects and programs that will

contribute to the attainment of a national ambient air quality standard. The funds are available to

non-attainment areas to reduce ozone and carbon monoxide based on population and pollution

severity. Eligible projects will be defined by the approved State Implementation Program (SIP).

State statutes make Regional agencies responsible for administering the CMAQ funds.

California Transportation Commission (CTC)

The body established by AB 402 to advise and assist the Secretary of the Business,

Transportation and Housing Agency and the Legislature in formulating and evaluating State

policies and plans for transportation Programs.


Dedicated Funds

Any funds generated specifically for transit purposes and which are dedicated at their source

(e.g., sales taxes, gasoline taxes, and property taxes), rather than through an allocation from the

pool of general funds. (FTA1)

Demand Response

A non-fixed route, non-fixed schedule vehicle that operates in response to calls from passengers

or their agents to the transit operator or dispatcher.

Disadvantaged Communities

Areas with either a median household income of 80% or less than the state median household

income or that fall within the top 20% of disadvantages communities as identified by



Emissions Budget Conformity Period

The conformity period following the transitional period in which the emissions budget test is the

sole test for conformity. The period begins when a 15 Percent SIP Revision is approved by EPA.


8 – 9

Emissions Budget Test

A conformity test in which MPOs demonstrate that the emissions from projects in a

transportation plan or program will not exceed a SIP’s emissions budget.

Emissions Factor (EMFAC)

EMFAC is California’s model for estimating emissions from on-road vehicles operating in

California. EMFAC is used as a starting point for developing plans to meet air quality standards,

and for assessing the impact of motor vehicle emissions regulations on emissions and air quality.

Emissions Inventories

A complete list of the sources and amounts of pollutant emissions within a specific area and time


Environmental Impact Report

A study of all the factors which a land development or construction project would have on the

environment in the area, including population, traffic, schools, fire protection, endangered

species, archeological artifacts, and community beauty. Many states require such reports be

submitted to local governments before the development or project can be approved, unless the

governmental body finds there is no possible impact, which finding is called a “negative


Environmental Impact Statement

Report developed as part of the National Environmental Policy Act requirements, which details

any adverse economic, social, and environmental effects of a proposed transportation project for

which Federal funding is being sought. Adverse effects could include air, water, or noise

pollution; destruction or disruption of natural resources; adverse employment effects; injurious

displacement of people or businesses; or disruption of desirable community or regional growth.

Environmental Justice

Environmental justice assures that services and benefits allow for meaningful participation and

are fairly distributed to avoid discrimination.

Environmental Protection Agency (EPA)

The federal regulatory agency responsible for administering and enforcing federal environmental

laws, including the Clean Air Act, the Clean Water Act, the Endangered Species Act, and others.

Escalation Factors

Factors provided by the Department of Finance to reflect the increase or decrease of future

capital and non-capital transportation costs used for STIP and SHOPP programming. Also

called “inflation factors.”

Executive Order

An order from the Governor’s Office. May also be a Presidential order.


8 – 10


Federal-Aid Highway Program

Transportation financing programs created by Federal legislation. ISTEA identified 64 Highway

Trust Fund programs, some of which have “set-asides” for specific purposes.

Federal Highway Administration-Planning (FHWA- PL)

Source of funds used by Tulare County Association of Governments to fund regional planning


Federal Implementation Plan (FIP)

A plan developed by EPA 24 months after a SIP is found deficient. A FIP provides strategies for

attainment, but does not eliminate the state’s responsibility to develop an approvable SIP.

Federal Minimum Allocation

Minimum amount of Highway Trust Fund money returned to states. This is 85 percent of the

state’s share of total amount paid into the fund by all states.

Federal Transportation Improvement Program (FTIP)

The Federal Transportation Improvement Program (FTIP) is a capital listing of all transportation

projects proposed over a four-year period for the Tulare County region. The FTIP is prepared to

implement projects and programs listed in the Regional Transportation Plan (RTP) and is

developed in compliance with state and federal requirements.

Fine Particulate Matter (PM 2.5)

Particulate matter less than 2.5 microns in size (PM-2.5). A micron is one millionth of a meter.

Fiscal Constraint

Making sure that a given program or project can reasonably expect to receive funding within the

time allotted for its implementation.

Fiscal Year (FY)

For California, the FY is the accounting period beginning July 1 and ending June 30. The

federal FY begins October 1 and ends September 30.

Fixed Route

A term applied to transit service that is regularly scheduled and operates over a set route; usually

refers to bus service.

Formula Capitol Grants

Federal transit funds for transit operators; allocation of funds overseen by FTA.


8 – 11

Fund Estimate

The fund estimate is a four-year estimate of State and Federal funds, for transportation purposes,

that are expected to be available for State Transportation Improvement Program (STIP)

programming. The California Transportation Commission uses the fund estimates as the basis

for programming projects into the STIP. The fund estimate is produce based on trends and

existing law. The creation of the fund estimate requires many significant assumptions. Should

any of the key assumptions require revision at a later date, the programming levels displayed in

the fund estimate will also need to be revised.


Geographic Information System (GIS)

A computerized data management system designed to capture, store, retrieve, analyze, and

display geographically referenced information. 2) A system of hardware, software, and data for

collecting, storing, analyzing, and disseminating information about areas of the Earth. For

Highway Performance Monitoring System (HPMS) purposes, Geographical Information System

(GIS) is defined as a highway network (spatial data which graphically represents the geometry of

the highways, an electronic map) and its geographically referenced component attributes (HPMS

section data, bridge data, and other data including socioeconomic data) that are integrated

through GIS technology to perform analyses. From this, GIS can display attributes and analyze

results electronically in map form.

Greenhouse Gas (GHG)

A greenhouse gas is a gas in an atmosphere that absorbs and emits radiation within the thermal

infrared range. This process is the fundamental cause of the greenhouse effect. The primary

greenhouse gases in the Earth’s atmosphere are water vapor, carbon dioxide, methane, nitrous

oxide, and ozone.


A permanent facility, or structure, that dictates the route and course of a vehicle with or without

operator guidance.


Highway System

Network of streets which carry automotive vehicles on local, arterial, ramps, and freeway-type


Highway Trust Fund

Federal user-fees on gasoline, etc., go into this fund. Used to reimburse states for Federal-aid



8 – 12


A poorly ventilated area, such as a tunnel or intersection, where mobile source emissions

(usually carbon monoxide or PM-10) are particularly high.

High Occupancy Toll Lanes

A road pricing scheme that gives motorists in single-occupant vehicles access to high-occupancy

vehicle lanes, or HOV lanes.

High Occupancy Vehicle Lanes

A high-occupancy vehicle lane, also known as an HOV lane, is a restricted traffic lane reserved

at peak travel times or longer for exclusive use of vehicles with a driver and one or more

passengers, including carpools, vanpools and transit buses.


A precursor of ozone in addition to nitrogen oxides (NOX). Hydrocarbons are also known as

volatile organic compounds (VOC) or reactive organic gases (ROGs). Until recently, most

efforts to reduce ozone have focused on controlling hydrocarbons.



The ability to connect, and the connections between, modes of transportation.

Intermodal Facilities and Systems Management System

The Intermodal Transportation Management System (ITMS) is a decision support system that

allows transportation planners to evaluate the relative performance of intermodal transportation

investment alternatives for a corridor of statewide significance and system perspective.

Intermodal facility refers to a transportation element that accommodates and interconnects

different modes of transportation. Intermodal facilities include, but are not limited to, highway

elements, coastal, inland and Great Lakes ports, canals, pipeline farms, airports, marine and/or

rail terminals, truck terminals, and intercity bus terminals. Intermodal transportation facilities

serve intrastate, interstate, and international movement of goods and passengers. Intermodal

system refers to a transportation network for moving people and goods using various

combinations of transportation modes.

Interregional Road System Plan (IRRS)

A series of interregional California highway routes, outside the urbanized areas, that provides

access to, and links between, the State’s economic centers, major recreational areas, and urban

and rural regions.

Intelligent Transportation Systems (ITS)

The application of advanced technologies to improve the efficiency and safety of transportation



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Light Rail

A streetcar-type vehicle operated on city streets, semi-exclusive rights-of-way, or exclusive

rights-of-way. Service may be provided by step-entry vehicles or by level boarding.

Level of Service (LOS)

1) A qualitative assessment of a road’s operating conditions. For local government

comprehensive planning purposes, level of service means an indicator of the extent or degree of

service provided by, or proposed to be provided by, a facility based on and related to the

operational characteristics of the facility. Level of service indicates the capacity per unit of

demand for each public facility. 2) This term refers to a standard measurement used by

transportation officials which reflects the relative ease of traffic flow on a scale of A to F, with

free-flow being rated LOS-A and congested conditions rated as LOS-F.

Long Range Transit Plan (LRTP)

A document resulting from regional or statewide collaboration and consensus on a region or

state’s transportation system, and serving as the defining vision for the region’s or state’s

transportation systems and services. In metropolitan areas, the plan indicates all of the

transportation improvements scheduled for funding over the next 20 years.


Matching Funds

The share of funds provided by the State or local applicant to supplement the Federal share of

funds to finance a Federal project. Match does not imply a 50/50 share.

Metropolitan Planning Organization (MPO)

An organization designated by the Governor as a forum for cooperative decision making by

principal elected officials of a general-purpose local government. Federal provisions require an

MPO in urbanized areas.

Mobile Sources

Motorized vehicles, including cars, trucks, buses and other modes of transportation.

Moving Ahead for Progress in the 21st Century (MAP-21)

MAP-21, the Moving Ahead for Progress in the 21st Century Act (P.L. 112-141), was signed

into law by President Obama on July 6, 2012. Funding surface transportation programs at over

$105 billion for fiscal years (FY) 2013 and 2014, MAP-21 is the first long-term highway

authorization enacted since 2005.


The availability of transportation options using different modes within a system or corridor.


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National Ambient Air Quality Standards (NAAQS)

Federal standards that set allowable concentrations and exposure limits for various pollutants.

National Environmental Protection Act (NEPA)

Established a national environmental policy requiring that any project using federal funding or

requiring federal approval, including transportation projects, examine the effects of proposed and

alternative choices on the environment before a federal decision is made.

Nitrogen Oxides (NOX)

A precursor of ozone in addition to hydrocarbons. Recent EPA policy has begun to emphasize

control of NOX.

Notice of Availability

A Notice of Availability (NOA) is a formal notice, published in the Federal Register, that

announces the issuance and public availability of a draft or final EIS.

Notice of Preparation

A Notice of Preparation is a document stating that an EIR will be prepared for a particular

project. It is the first step in the EIR process.



A commitment by the Federal government to reimburse the States the Federal share of FederalAid

projects. Obligation occurs when FHWA has approved the PS&E for a project prior to

advertisement of the construction contract.

Obligation Authority (OA)

Obligation Authority is the ceiling Congress places on all commitments of apportionments for

any given year. Individual States receive OA in proportion to their apportionments and

allocations. From a fund estimate point of view, OA is the prime determinant of usable Federal

funds. OA is only available for the current year. Typically, Congress provides the OA limits at

less than ISTEA’s total annual apportionment level.


A compensation for the expansion or construction of a polluting stationary source. Before such

expansion/construction begins, an offset permit is required to show that emissions will be

reduced at another facility to offset new emissions increases. Under sanctions, the offset

requirement would be increased to two-to-one.

Ozone (O3)


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The major component of smog. Ozone is formed when hydrocarbons and nitrogen oxides (NOX)

combined in the presence of sunlight. Ground level ozone is a harmful pollutant, while

stratospheric ozone protects life on earth from harmful ultraviolet rays. CO is one of three

pollutants linked to motor vehicle emissions that are regulated by the Clean Air Act.



1) Comparable transportation service required by the American Disabilities Act (ADA) for

individuals with disabilities who are unable to use fixed route transportation systems. (49CFR37)

(APTA1) 2) A variety of smaller, often flexibly scheduled-and-routed transportation services

using low-capacity vehicles, such as vans, to operate within normal urban transit corridors or

rural areas. These services usually serve the needs of persons that standard mass-transit services

would serve with difficulty, or not at all. Often, the patrons include the elderly and persons with


Particulate Matter (PM)

Solid or liquid particles that measure less than 10 (or 2.5) microns. A micron is one millionth of

a meter. PM10 is one of three pollutants linked to motor vehicle emissions that are regulated by

the Clean Air Act.

Plans, Specifications and Estimates (PS&E)

Final project documents and cost estimates prepared for construction contracts.


The essential ingredients that form a secondary pollutant, e.g., nitrogen oxides and hydrocarbons

are precursors in the formation of ozone.


Process of selecting and scheduling high-priority capital outlay projects for development and


Project Approval & Environment Document (PA& ED)

The beginning phase of a project which includes feasibility studies and environmental studies,

concluding with the selection and approval of a project alternative and final environmental


Project Study Report

Project Study Reports are engineering reports whose purpose is to document agreement on the

scope, schedule, and estimated cost of a project so that the project can be considered for

inclusion in a future programming document such as the STIP.


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Reactive Organic Gases (ROG)

Volatile organic compounds, excluding methane, found in the atmosphere which is capable of

producing radicals upon reaction with common atmospheric oxides and radicals; these

compounds are often responsible for positive feedback cycles involving the production of ozone.

Right of Way (ROW)

Purchase of property for transportation purposes.

Regional Transportation Improvement Program (RTIP)

A list of proposed transportation projects submitted to the CTC by the regional transportation

planning agencies candidates for STIP funding. The individual projects are first proposed by

local jurisdictions, then evaluated and prioritized by the regional agency for submission to the

CTC. The RTIP has a four-year planning horizon, and is updated every two years.

Regional Transportation Plan (RTP)

State-mandated documents to be developed biennially by all RTPAs, describing existing and

projected transportation conditions, needs, alternatives and their consequences. The RTP also

serves as the Metropolitan Planning Organizations’ long-range plan.



EPA sanctions that will be imposed when a SIP revision is found deficient or not submitted.

Sanctions can include two-to-one offsets for stationary sources, or a cutoff of highway funding.

Single Occupant Vehicle (SOV)

A vehicle with just one occupant. The reduction of SOVs is a major goal of many transportation.

SPR Funds

Highway Planning and Research Funds are the 1-1/2 percent moneys allocated to states by

Section 307(c) of Title 23 U.S.C. Caltrans and Local Agencies share to the use of these funds.

State Highway Account (SHA)

The SHA is the largest of the fund estimate accounts. Principle sources of funds: Excise taxes

on motor vehicle fuels, truck weight fees and the Federal Highway Trust Fund. Supports the

Departments: Local Assistance, Maintenance, Operation, Program Development and Project

Support programs as well as administrative support.


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State Highway Operation and Protection Program (SHOPP)

Projects programmed in the Department’s State Highway Operation and Protection Program

(SHOPP). A program created by State legislation that includes State highway safety and

rehabilitation projects, Seismic Retrofit projects, land and building projects, landscaping, some

operational improvements, bridge replacement and the minor program — generally those types of

projects that Caltrans as the owner-operator of the system uses to maintain the integrity of the

system. Unlike STIP projects, SHOPP projects may not increase roadway capacity. SHOPP is a

four-year program of projects, adopted separately from the STIP cycle. The 1989 State gas tax

increase partially funds the program, but it is primarily funded through the “old 9 cents-pergallon

State gas tax and from Federal funds. (Note: The name of this program changed to

SHOPP [State Highway Operation and Protection Program] in 1994 per SB 1435-Kopp.)

State Implementation Plan (SIP)

A plan containing the strategies to achieve attainment of NAAQS, and maintain air quality levels

once attainment is achieved.

State Transportation Improvement Program (STIP)

The STIP includes the following programs: After considering the RTIPs, rural RTPA comments

and input from public hearings, the CTC adopts the STIP which provides the delivery schedule

of projects for the upcoming four years.

State Transit Assistance (STA)

TP&D account funds allocated by RTPAs to transit operators, cities and counties for transit

planning, capital and operations.

Stationary Sources

Relatively large, fixed sources of emissions, such as factories or power stations.


Financial assistance to local governments (i.e., local assistance, guideway funds).


TDA (Transportation Development Act)

An act which specifies how the 1/4 percent of local sales tax for transportation purposes is

distributed. It created the TP&D account. TDA is codified in Sections 29530-29536 of the

Government Code and Sections 99200-99408 of the Public Utilities Code.

Traffic Analysis Zone (TAZ)

The smallest geographically designated area for analysis of transportation activity. A zone can be

from one to ten square miles in area. Average zone size depends on the total size of study area.

Transitional Conformity Period

Conformity period when ozone non-attainment MPOs must perform both the emissions budget

test and the build/no-build test for hydrocarbons. The transitional period begins on the date


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when the 15 Percent Reasonable Further Progress SIP revision was due and ends when that SIP

revision is approved.

Transportation Control Measures (TCM)

A measure that alters personal travel patterns or traffic flow to reduce emissions. As an umbrella

label. TCM includes transportation systems management (TSM) and transportation demand

management (TDM).

Transportation Equity Act for the 21st Century (TEA-21)

The Transportation Equity Act for the 21st Century was enacted June 9, 1998 as Public Law

105-178. TEA-21 authorized the Federal surface transportation programs for highways, highway

safety, and transit for the 6-year period 1998-2003.

Transportation System Management (TSM)

A process oriented approach to solving transportation problems considering both long- and

short-range implication, which is service and operations oriented in which low capital, control



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Vehicle Miles Traveled (VMT)

The sum of distances traveled by all motor vehicles in a specified region.

Volatile Organic Compounds (VOC)

Another name for hydrocarbons, a precursor of ozone.

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