The guide below was developed to help decode the numerous acronyms and abbreviations associated with transportation and transportation planning and programs.
AADT
Average Annual Daily Traffic
AASHTO
American Association of State & Highway Transportation Officials
ACP
Asphalt Concrete Pavement
ADA
Americans with Disabilities Act
ADT
Average Daily Traffic
A/I, AI
Arc Info; Artificial Intelligence
APTA
American Public Transit Association
APTS
Advanced Public Transportation System
AQIP
Air Quality Implementation Program
ASM
Acceleration Simulation Mode
ATIS
Advanced Traveler Information System
ATMS
Advanced Traffic Management Systems
AVI
Automated Vehicle Identification System
AVL
Automatic Vehicle Location
AWDT
Average Weekday Traffic
BAB
Bicycle Advisory Board
BACT
Best Available Control Technology
BACM
Best Available Control Measure
BNIP
Bridge Needs Improvement Process
BRF
Bridge Replacement Funds
BRM
Bridge Replacement Metropolitan Areas
BRP
Bridge Replacement on the Primary System (Old Program)
BRS
Bridge Replacement of the Secondary System
BST
Bituminous Surface Treatment
CAA
Clean Air Act of 1970
CAAA
Clean Air Act Amendments of 1990
CAC
Critical Arterial Corridor
CAL3QHC
Air Quality Modeling Software for Intersection Analysis
CAL3QHCR
Updated Version of CAL3QHC
CAP
Clean Air Program
CAPP
County Arterial Preservation Program
CAW
Clean Air Washington Act
CB
Census Block
CBD
Central Business District
CDBG
Community Development Block Grant
CDF
Community Development Funds
CMAQ
Congestion Mitigation / Air Quality (ISTEA Funding)
CMS
Congestion Management System (ISTEA Program)
CMS
Concurrency Management System (GMA requirement)
CMSA
Consolidated Metropolitan Statistical Area
CO
Carbon Monoxide
COG
Council of Governments
CRAB
County Road Administration Board
CRABS
Cement Recycled Asphalt Base Stabilization
CT
Census Tract
CTPP
Census Transportation Planning Package
CTR
Commute Trip Reduction
DNS
Determination of Non-Significance
DOE
Department of Energy (U.S.) or Department of Ecology (State)
DOT
Department of Transportation (U.S. or State)
DU
Dwelling Unit
DUA
Dwelling Units per Acre
DVMT
Daily Vehicle Miles of Travel
ED
Enumeration District
EDC
Economic Development Council
E&D
Elderly and Disabled
EIS
Environmental Impact Statement
EJ
Environmental Justice
EPA
Environmental Protection Agency
FA
Federal-aid
FAI
Federal Aid Interstate
FAP
Federal Aid Primary
FAM
Federal Aid Municipal
FAME
Freeway and Arterial Management Effort
FAS
Federal Aid Secondary
FAU
Federal Aid Urban
FFY
Federal Fiscal Year
FGTS
Freight and Goods Transportation System
FHWA
Federal Highway Administration
FIRE
Fire, Insurance, Real Estate
FTA
Federal Transit Administration
GBF/DIME
Geographic Base File / Dual Independent Map Encoding (pre 1990)
GCPF
Grade Crossing Protection Fund
GIS
Geographic Information System
GMA
Growth Management Act
HAR
Highway Advisory Radio
HAVS
Health Activity Volunteer Services
HC
Hydrocarbons
HCM
Highway Capacity Manual
HCS
Highway Capacity Software
HCT
High Capacity Transit
HCTS
High Capacity Transportation Study
HERS
Highway Economic Requirements System
HES
Hazard Elimination Safety
HOV
High Occupancy Vehicle
HPMS
Highway Performance Monitoring Systems
HTF
Highway Trust Fund
HU
Housing Unit
HVAC
Heating, Ventilating & Air Conditioning
I-90
Interstate Route 90
I/C
Interchange
ID Team
Interdisciplinary Team
ITD
Idaho Transportation Department
IMS
Intermodal Management System
ISTEA
Intermodal Surface Transportation Efficiency Act of 1991
ITE
Institute of Transportation Engineers
ITS
Intelligent Transportation Systems
IVHS
Intelligent Vehicle Highway System
JIT
Just-in-Time delivery systems
KMPO
Kootenai Metropolitan Planning Organization
LHSIP
Local Highway Safety Improvement Program
LHTAC
Local Highway Technical Assistance Council
LID
Local Improvement District
LOS
Level of Service
LRHIP
Local Rural Highway Investment Program
LRP
Long Range Plan
LRT
Light Rail Transit
LU
Land Use
MAB
Metropolitan Area Boundary
MDE
Measure of Effectiveness
MDNS
Mitigated Determination of Non-Significance
MFDU
Multi-Family Dwelling Unit
MIA
Major Investment Analysis
MIS
Major Investment Study
MOBILE5b
Regional Air Quality Modeling Software (For Emissions Analysis)
MOBILE6
Regional Air Quality Modeling Software (For Emissions Analysis)
MOP
Measure of Performance
MP
Mile Post
MPA
Metropolitan Planning Area
MPO
Metropolitan Planning Organization
MSA
Metropolitan Statistical Area
MTP
Metropolitan Transportation Plan
MVT
Motor Vehicle Trips
NAA
Nonattainment Area
NAICS
North American Industrial Classification System
NAAQS
National Ambient Air Quality Standards
NBI
National Bridge Inventory
NBIS
National Bridge Inspection Standards
NCHRP
National Cooperative Highway Research Program
NEPA
National Environmental Policy Act
NHS
National Highway System
NOx
Nitrogen Oxide Pollutants
NTI
National Transit Institute
Oz
Ozone
OA
Obligation Authority
O-D
Origin-Destination (Survey or Zone)
P&A
Production and Attraction
PCCP
Portland Cement Concrete Pavement
PE
Preliminary Engineering
PLSS
Public Land Survey System
PM-2.5
Particulate Matter – 2.5 Microns in size and less
PM-10
Particulate Matter-10 Microns
PMS
Pavement Management System (ISTEA)
PPD
Pounds Per Day
PPM
Parts Per Million
PSR
Pavement Serviceability Rating
PS&E
Plans, Specifications and Estimates
PTBA
Public Transportation Benefit Area
PTMS
Public Transportation Management System
PTSA
Public Transportation Systems Account
PUD
Planned Unit Development
PUMS
Public User Microdata System
PWTF
Public Works Trust Fund (Funding Program)
RACM
Reasonable Available Control Measures
RACT
Reasonable Available Control Technology
RAP
Rural Arterial Program
RCW
Regional Councils of Washington
RFP
Requests for Proposals
RFP
Reasonable Further Progress
RID
Road Improvement District
ROW
Right of Way
RRP
Railroad Protection Fund
RRS
Railroad Safety
RTA
Regional Transportation Authority
RTP
Regional Transportation Project
S9
System 9 (GIS Software)
SCA
Small City Account
SEE
Social, Economic, and Environmental (Effects)
SFDU
Single Family Dwelling Unit
SIC
Standard Industrial Classification
SIP
State Implementation Plan (For Air Quality)
SMSA
Standard Metropolitan Statistical Area
SO2
Sulfur Dioxide
SOV
Single Occupancy Vehicle
SR
State Route
SRTC
Spokane Regional Transportation Council
STA
Spokane Transit Authority
STEP
Service in Transportation Enhancement Project
STF
Summary Tape File (Census Bureau Data Classification)
STIP
Statewide Transportation Improvement Program
STP
Surface Transportation Program (Funding through ISTEA)
STRAHNET
Strategic Highway Network
SVA
South Valley Arterial
Synchro
Intersection Capacity Analysis Computer Model
TAZ
Transportation Analysis Zone
TBD
Transportation Benefit District
TC
Transportation Community
TCM
Transportation Control Measure
TCP
Transportation Control Plan
TDM
Transportation Demand Management
TDP
Transit Development Plan
TEA-21
Transportation Equity Act for the 21st Century
TIA
Transportation Improvement Account
TIB
Transportation Improvement Board
TIGER
Topological Integrated Geographic Encoding & Referencing (1990)
TIP
Transportation Improvement Program
TMA
Transportation Management Area
TMA
Transportation Management Association
TMC
Transportation Management Center
TMODEL2
Travel Demand Computer Simulation Model
TMP
Transit Monitoring Program
TMS
Traffic Management System
TPY
Tons Per Year
TRAC
Washington State Transportation Center
TRB
Transportation Research Board
TSC
Transportation Steering Committee
TSM
Transportation System Management
TSP
Total Suspended Particulates
TTC
Transportation Technical Committee
UAB
Urban Arterial Board
UAB
Urban Area Boundary
UATA
Urban Arterial Trust Account
UGA
Urban Growth Area
UGB
Urban Growth Boundary
UIA
Urban Impact Area
UMTA
Urban Mass Transportation Administration (Now FTA)
UPWP
Unified Planning Work Program
URISA
Urban & Regional Information Systems Association
USDOE
United States Department of Ecology
USDOT
United States Department of Transportation
UZA
Urbanized Area
V/C
Volume to Capacity Ratio
VE
Value Engineering
VHT
Vehicle Hours of Travel
VISSIM
Visualization & Corridor Model
VISUM
Travel Demand Model
VMT
Vehicle Miles Traveled
VPH
Vehicles Per Hour
WAC
Washington Administrative Code
WACO
Washington Association of County Officials
WSDOE
Washington State Department of Ecology
WSDOT
Washington State Department of Transportation
WSEO
Washington State Energy Office
WSTC
Washington State Transportation Commission
WTPI
Washington Transportation Policy Institute
WWW
Worldwide Web (Internet)