Skip Top Navigation

Transportation Acronym Guide

Not finding an acronym you're looking for?  Let us know.  Chances are that if you're looking for it, someone else is too. Italicized text indicates publication titles.

For more information about transportation acronyms, check out the Federal Bureau of Transportation Statistics Acronym Guide



AAAEAmerican Association of Airport Executives
AADTAnnual Average Daily Traffic
AAGAssistant Attorney General
AAMVAAmerican Association of Motor Vehicle Administrators
AARAssociation of American Railroads
AASHTOAmerican Association of State Highway and Transportation Officials
A/BAble Bodied
ACPAsphalt Concrete Pavement
ACSAdaptive Control Software
ADA Americans with Disabilities Act
ADCAutomated Data Collection
ADT Average Daily Traffic
AGC Associated General Contractors
AIAAmerican Institute of Architects
AIDAAdvanced Incident Detection Algorithm
AIRS  Automated Infrared Roadside Scanning
AISCAmerican Institute of Steel Constructors, Inc.
ALPAirport Layout Plan
ALPR Automatic License Plate Reader
AMTRAKNational Rail Passenger Corporation
ANSIAmerican National Standards Institute
AOCIAirport Operators Council International
AOPAAircraft Owners and Pilots Association
APAWAsphalt Paving Association of Washington
APDAirport Planning District
APTAAmerican Public Transit Association
APWAAmerican Public Works Association
AQCRAir Quality Control Requirements OR Air Quality Control Regulations
ARBAgency Request Budget
ARMAccumulated Route Mileage
ARRAAmerican Recovery and Reinvestment Act
ARTBAAmerican Road and Transportation Builders Association
ARTCCAir Route Traffic Control Center
ASCEAmerican Society of Civil Engineers
ASCIIAmerican Standard Code for Information Interchange
ASRAlkali-Silica Reactivity
ASTMAmerican Society for Testing and Materials
ATAAirline Transport Association also American Trucking Association
ATMSAutomated Training Management System
ATRAnnual Traffic Report
AVAAir Void Analyzer
AVMTAnnual Vehicle Miles Traveled
AWCAssociation of Washington Cities
AWDTAverage Weekday Traffic
AWDVTEAverage Weekday Vehicle Trip Ends
AWSAmerican Welding Society
AWVAlaskan Way Viaduct


BASSBid Analysis and Statistics System
B/CBenefit Cost
BEISTBridge Engineering Information System
BIA Bureau of Indian Affairs (U.S.)
BMBench Mark
BMBureau of Mines (U.S.)
BMPBeginning Mile Post
BMP Best Management Practice
BOD Basis of Design
BOE Basis of Estimate
BPABonneville Power Administration
BSTBituminous Surface Treatment
BTA Bridge Technical Advisor
BTSBureau of Transportation Statistics (U.S.)


CACertification Acceptance
CABCivil Aeronautics Board
CACCollision Analysis Corridor
CACHSCitizens' Advisory Committee on Highway Safety
CADComputer Aided Drafting
CADDComputer Aided Drafting and Design
CAE        Computer Automated Engineering
CAL   Collision Analysis Location
CAPCivil Air Patrol
CAPSContract Administration and Payment System
CBDCentral Business District
CBRTCommittee for Balanced Regional Transportation
CCIConstruction Cost Index
CCISConstruction Contract Information System
C-DCollector-Distributor Road
CDCCenter for Disease Control
CDFControlled Density Fill
CE - NEPACategorical Exclusion (U.S.)
CE - SEPACategorical Exemption
CESCLCertified Erosion and Sediment Control Lead
CEQCouncil on Environmental Quality
CFRCode of Federal Regulations
CICASCooperative Intersection Collision Avoidance Systems
CLASCollision Location and Analysis System
CLBCurrent Law Budget
CLCFCounty Location Coding Form
CMAQCongestion Mitigation/Air Quality
CMPCorridor Management Plan
COCarbon Monoxide
CO2Carbon Dioxide
CO2ECarbon Dioxide Equivalents
COECorps of Engineers (U.S.)
CPMSCapital Program Management System
CPDMCapital Program Development & Management
CRABCounty Road Administration Board
CRASHCollision Reporting and Statistical History
CRGCColumbia River Gorge Commission
CSControl Section
CSBCCrushed Surfacing Base Course
CSGCouncil of State Governments
CSTCCrushed Surfacing Top Course
CTACounty Transportation Authority
CTRCommute Trip Reduction
CVECommercial Vehicle Enforcement
CVISNCommercial Vehicle Information Systems & Networks
CVPSCommercial Vehicle Pass System


DART    Days Away, Restricted Duty, or Job Transfer
DBEDisadvantaged Business Enterprise
DBRDiscretionary Bridge Replacement
DDHVDirectional Design Hour Volume
DEISDraft Environmental Impact Statement
DHRDDivision of Human Resource Development
DHVDesign Hour Volume
DISDepartment of Information Services
DMIDistance Measuring Instrument
DNRDepartment of Natural Resources
DNSDetermination of NonSignificance
DOADepartment of the Army (U.S.)
DOEDepartment of Ecology (Washington State)
DOLDepartment of Licensing
DOPDepartment of Personnel
DOTDepartment of Transportation
DPData Processing
DSHSDepartment of Social and Health Services
DVMTDaily Vehicle Miles Traveled


EAEnvironmental Assessment
ECSEnvironmental Classification Summary
EAAExperimental Aircraft Association
EBASEEstimate Bid Analysis Systems (Replaces BASS)
ECM   Electronic Content Management
ECRExternal Civil Rights Branch, a suborganization of the Equal Opportunity Office
ECSEnvironmental Classification Summary
EDMElectronic Distance Measurers
EDWMSElectronic Document Workflow Management System
EEOEqual Employment Opportunity
EISEnvironmental Impact Statement
ELTElectronic Locator Transmitters
EMPEnding Mile Post
EOBEnd of Biennium
EOCEmergency Operations Center
EOREngineer of Record
EPAEnvironmental Protection Agency
ESDEmployment Security Department (Washington State)
ESDEducational Services District
ESAEndangered Species Act
ESALEquivalent Single Axle Load
ETCEmployee Transportation Coordinator


FAFederal Aid
FAAFederal Aviation Administration
FAIFederal Aid Interstate
FAMEFreeway and Arterial Management Effort
FAPFederal Aid Primary
FAPGFederal Aid Policy Guide
FARSFatality Analysis Reporting System
FASFederal Aid Secondary
FASPFederal Aid Safety Program
FAST CorridorFreight Action Strategy for the Everett-Seattle-Tacoma Corridor
FAUFederal Aid Urban
FAUSFederal Aid Urban Systems
F&BFinance and Budget Management Division
FBPFerry Boat Program (funded through MAP-21)
FC    Functional Classification
FEAFinal Environmental Assessment
FEISFinal Environmental Impact Statement
FEMAFederal Emergency Management Agency
FERCFederal Energy Regulatory Commission
FFYFederal Fiscal Year
FGTSFreight and Goods Transportation System
FHPMFederal-Aid Highway Program Manual
FHWAFederal Highway Administration
FICFlight Instructor Clinic
FLBFacilities and Lease Board
FMACFreight Mobility Advisory Committee
FMCSAFederal Motor Carrier Safety Administration
FMSIBFreight Mobility Strategic Investment Board
FONSIFinding of No Significant Impact
FRAFederal Railroad Administration
FRAPFreight Rail Assistance Program
FRIB Freight Rail Investment Bank
FSForest Service
FSSFlight Service Station
FTAFederal Transit Administration
FTEFull Time Equivalent
FYFiscal Year
4-RHighway Reconstruction, Resurfacing, Restoration, and Rehabilitation


GAGeneral Administration, Department of
GAMAGeneral Aviation Manufacturers Association
GCOMGeneral Contractor/Construction Management
GHGsGreenhouse Gases
GISGeographic Information Systems
GMAGrowth Management Act
GMAPGovernment Management, Accountability and Performance
GNBGray Notebook
GPGeneral Purpose
GPSGlobal Positioning System
GRDOGIS and Roadway Data Office
GSPGeneral Special Provision
GTECGrowth and Transportation Efficiency Center
GVWGross Vehicle Weight


HARHighway Advisory Radio
HCMHighway Capacity Manual
HCTSHigh Capacity Transportation Study
HMAHot Mix Asphalt (aka ACP)
HOTHigh Occupancy Toll
HOVHigh Occupancy Vehicles
HPAHydraulic Project Approval
HPMSHighway Performance Monitoring System
HSIGHighway Safety Issues Group
HSIPHighway Safety Improvement Program
HSM Highway Safety Manual
HSFHighway Safety Fund (State)
HSISHighway Safety Information System
HSPState Highway System Plan
HSRCHighway Safety Research Center
HSSHighways of Statewide Significance
HTFHighway Trust Fund (U.S.)
HVACHeating, Ventilation and Air Conditioning


IInterstate (route)
IACInter-Agency Committee for Outdoor Recreation
ICCInterstate Commerce Commission (U.S.)
IDCIntra-Departmental Communication
IDTInterdisciplinary Team
IGGAInternational Grooving & Grinding Association
IFRInstrument Flight Rules
ILInstructional Letter
ILSInstrument Landing System
ILTIncident Location Tool
IMSIntermodal Management System
IRIncident Response
IRDInternational Roadway Dynamics
IRIInternational Roughness Index
ISTEAIntermodal Surface Transportation Efficiency Act, see also SAFETEA-LU, which updates this Act
ITEInstitute of Traffic Engineers
ITSIntelligent Transportation System
IVHSIntelligent Vehicle Highway System


JLARCJoint Legislative Audit and Review Committee
JOPSJoint Operations Policy Statement
JTCJoint Transportation Committee


KMKnowledge Management
KIPS1000 lbs.


LBCLegislative Budget Committee
LEAPLegislative Evaluation and Accountability Program
L&ILabor and Industries
LLCCLowest Life Cycle Cost
LNGLiquefied Natural Gas
LMSLearning Management System
LMYLane Mile Years
LOSLevel of Service
LOUPALetter Of Understanding Project Award
LRFDLoad and Resistance Factor Design
LTAPLocal Technical Assistance Program
LTPPLong Term Pavement Performance
LTCLegislative Transportation Committee


MAISA Multi Agency Interdisciplinary Stakeholder Advisory
MAPMaintenance Accountability Process
MAP-21Moving Ahead for Progress in the 21st Century
MAPOMetropolitan Area Planning Organization
MARADMaritime Administration (U.S.)
MBEMinority Business Enterprise
METROMunicipality of Metropolitan Seattle
MFRSMileage and Facilities Reporting System
MICManufacturing and Industrial Center
MIREMinimum Inventory of Roadway Elements
MISManagement Information Systems
MLMPMainline Milepost
MMISManpower Management Information Systems
MMTMillion Metric Tons
MMUCCModel Minimum Uniform Crash Criteria
MOAMemoranda of Agreement
MOUMemorandum of Understanding
MPMaster Plan
MPOMetropolitan Planning Organization
MQPRMid-Quarter Progress Report
MSDMetropolitan Service District
MSRMerit System Rules
MTIPMetropolitan Transportation Improvement Program
MTCO2eMetric Tons of Carbon Dioxide Equivalent
MUTCDManual on Uniform Traffic Control Devices
MVETMotor Vehicle Excise Tax
MVFMotor Vehicle Fund
MVMTMillion Vehicle Miles Traveled
MWBEMinority and Women's Business Enterprise


NAAQSNational Ambient Air Quality Standards
NARUCNational Association of Regulatory Utility Commissioners
NASNaval Air Station
NASAONational Association of State Aviation Officials
NBAANational Business Aviation Association
NCHRPNational Cooperative Highway Research Program
NCPP  National Center for Pavement Preservation
NECNational Electrical Code
NEMANational Electrical Manufacturers' Association
NEPANational Environmental Policy Act
NGSUnited States National Geodetic Survey
NGVDNational Geodetic Vertical Datum (1929)
NHCANational Hearing Conservation Association
NHPPNational Highway Performance Program
NHSNational Highway System
NHTSANational Highway Traffic Safety Administration
NIOSHNational Institute for Occupational Safety and Health
NOAANational Oceanographic and Atmospheric Administration
NPIASNational Plan of Integrated Airport Systems
NPDESNational Pollutant Discharge Elimination System
NPRMNotice of Proposed Rule Making
NPSNational Park Service
NMFSNational Marine Fisheries Service
NRCCNatural Resource Coordinating Committee
NSCNational Safety Council
NSCNorth Spokane Corridor
NTSBNational Transportation Safety Board
NTUNephelometric Turbidity Unit


OAHPOffice of Archaeology and Historic Preservation
O-DOrigin-Destination (survey or zone)
OEOOffice of Equal Opportunity
OFMOffice of Financial Management
OIGOffice of Inspector General (U.S.)
O&MOperations and Maintenance
OMBOffice of Management and Budget
OMWBEOffice of Minority and Women's Business Enterprises
ORVOff-Road Vehicle
OSOrdinary Seaman
OSOperating System
OSCOlympia Service Center
OSHAOccupational Safety and Health Administration
OUMOffice of Urban Mobility


PACEPolitical Action for Concerned Employees
PAOPublic Affairs Office
PCPoint of Curvature
PCCPalouse River and Coulee City
PCCPPortland Cement Concrete Pavement
PCIPavement Condition Index
PDOProject Development Office
PDR Public Disclosure Request
PEPreliminary Engineering
PEProject Engineer
PEProfessional Engineer
PEFPre-Existing Funds
PIOPublic Information Office (or Officer)
PMProject Manager
PMBOKProject Management Body of Knowledge
PMRSProject Management Reporting System
PMTSProfessional Membership Tracking System
POGPriorities of Government
PPEPersonal Protective Equipment
PR&PTPlanning, Research and Public Transportation Division
PRIIAPassenger Rail Investment and Improvement Act
PSCCAPuget Sound Capitol Construction Account (Ferries)
PSCOGPuget Sound Council of Governments
PS&EPlans, Specifications, and Estimate
PSFOAPuget Sound Ferry Operations Account
PSRCPuget Sound Regional Council
PTPoint of Tangent
PTBAPublic Transportation Benefit Area
PTEProfessional and Technical Employees
PTFPublic Transfer Facility


QPRQuarterly Project Report
QRQuality Response
QRQuick Response


RAPRural Arterial Program
RAPCONRadar Approach Control
RATARural Arterial Trust Account
RCWRevised Code of Washington
RDPRoute Development Plan
RFPRequest for Proposal
RIRRecordable Incident Rate
RMISRecords Management Imaging Services
RODRecord of Decision
RPMRaised/Recessed Pavement Marker Maintenance
RRR (3R)Resurfacing, Restoration, and Rehabilitation
RSLRemaining Service Life
RTARegional Transit Authority
RTIPRegional Transportation Improvement Program
RTPORegional Transportation Planning Organization
RVRecreational Vehicle
R/WRight of Way


SAState Aid
SAFETEA-LUSafe, Accountable, Flexible, Efficient Transportation Equity Act – A Legacy for Users; see also MAP-21, which updates this Act
SAOState Auditor’s Office
SARSearch and Rescue
SBESmall Business Enterprise
SCIPState Capital Improvement Program
SDStructurally Deficient
SEISSupplemental Environmental Impact Statement
SEPAState Environmental Policy Act
SHPOState Historic Preservation Officer
SHSPState Highway System Plan also known as the HSP
SMESubject Matter Expert
SOVSingle Occupancy Vehicle
SPCCSpill Prevention, Control, and Countermeasure Plan
SPHAState Patrol Highway Account
SRState Route
SRPSecondary Road Plan
SSPStormwater Site Plan
St. AidState Aid
STCDOStatewide Travel & Collision Data Office (formerly known as the Transportation Data Office)
STIPStatewide Transportation Improvement Program
STPSurface Transportation Program (funded through ISTEA)
SWPPPStormwater Pollution Prevention Plan


TACTechnical Advisory Committee
TCPTraffic Control Plan
TDMTransportation Demand Management
TDMTravel Demand Management
TDOTransportation Data Office (see STCDO)
TEA-21Transportation Equity Act for the 21st Century of 1998
TEFTransportation Equipment Fund
TEISTransportation Executive Information System
TIATransportation Improvement Account
TIBTransportation Improvement Board
TIGERTransportation Investment Generating Economic Recovery
TIPTransportation Improvement Program
TNBTacoma Narrows Bridge
TOPICSUrban Traffic Operations Programs to Improve Capacity and Safety
TPATransportation Partnership Account
TPOTransportation Planning Office
TRACWashington State Transportation Center
TRBTransportation Research Board
TRISTransportation Research Information Services
TSCTraffic Safety Commission
TSMTransportation Systems Management
TTAPTribal Technical Assistance Program
TWLTLTwo-Way Left-Turn Lane


UABUrban Arterial Board
UATAUrban Arterial Trust Account
UBCUniform Building Code
UFASUniform Federal Accessibility Standards
UMTAUrban Mass Transportation Administration (U.S.)
UPCUniform Plumbing Code
UORRUtility Object Relocation Record
USUnited States (route)
USBRUnited States Bureau of Reclamation
USCUnited States Code
USCGUnited States Coast Guard
USDOEUnited States Department of Energy
USDOTUnited States Department of Transportation
USEDUnited States Engineering Department (Corps of Engineers, Department of the Army)
USFSUnited States Forest Service (U.S. Department of Agriculture)
USFWSUnited States Fish and Wildlife Service
USGSUnited States Geological Survey
UTCUtilities and Transportation Commission
UTLUnable to Locate


VMTVehicle Miles Traveled
VPHVehicles Per Hour


WAAWashington Aviation Association
WACWashington Administrative Code
WACOWashington Association of County Officials
WAMAWashington Airport Management Association
WASHTOWestern Association of State Highway and Transportation Officials
WBEWomen's Business Enterprise
WDFDWestern Direct Federal Division (FHWA)
WDFWWashington State Department of Fish and Wildlife
WFFWashington Flying Farmers
WITSWashington Incident Tracking System
WOAWork Order Authorization
WPAWashington Pilots Association
WPCPWater Pollution Control Plan
WPEAWashington Public Employees Association
WPPSSWashington Public Power Supply System
WDFWWashington Department of Fish and Wildlife
WSASPWashington State Airport System Plan
WSDOTWashington State Department of Transportation
WSECUWashington State Employees' Credit Union
WSFWashington State Ferries
WSPWashington State Patrol
WSTAWashington State Transit Association
WSTCWashington State Transportation Commission
WSTPWashington State Transportation Plan
WTPWashington's Transportation Plan
WTSCWashington Traffic Safety Commission


No Listing


Year to Date



No Listing
Questions or comments about the acronym guide? Contact the WSDOT HQ Library at or (360) 705-7750.