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Transportation Acronyms

Acronym Meaning
3R Restoration, Rehabilitation, and Resurfacing
4R 3R plus Reconstruction
AAA American Automobile Association
AADL Annual Average Daily Loading
AADW Annual Average Days of the Week
AAMA American Automobile Manufacturers Association
AAMVA American Association of Motor Vehicle Administrators
AAPA American Association of Port Authorities
AAR Association of American Railroads
AASHO Former name of AASHTO
AASHTO American Association of State Highway and Transportation Officials
AAWDT Annual Average Weekday Traffic
ABA American Bus Association
ABS Antilock Braking System
AC Asphalt Concrete
ACC Adaptive Cruise Control
ACEC American Consulting Engineers Council
ACI Automatic Cargo Identification
ACI American Concrete Institute
ACPA American Concrete Pavement Association
ACS Automatic Clearance Sensing
ADI Automatic Driver Identification
ADIS Advanced Driver Information Systems
ADL Average Daily Load
ADT Average Daily Traffic (vpd in both directions)
ADTT Average Daily Truck Traffic
AEA American Electronics Association
AEI Automated Equipment Identification
AFV Alternative Fuel Vehicle
AGC Associated General Contractors
AHAR Automatic Highway Advisory Radio
AHS Average Highway Speed
AHS Automated Highway System
ALAPCO Association of Local Air Pollution Control Officials
ALF Accelerated Loading Facility
AMFA Alternative Motor Fuels Act (1988)
AMPO Association of Metropolitan Planning Organizations
AMRL AASHTO Materials Reference Lab
ANPRM Advanced Notice of Proposed Rulemaking
ANSI American National Standards Institute
APC Automated Passenger Counting
APCA American Portland Cement Alliance
APTA American Public Transit Association
APTS Advanced Public Transportation Systems
APWA American Public Works Association
AQ Any Quantity
ARAN Automatic Road Analyzer
ART Applied Research and Technology
ARTBA American Road and Transportation Builders Association
ASCE American Society of Civil Engineers
ASTM American Society for Testing and Materials
ATA American Trucking Associations, Inc.
ATC Automated Toll Collection
ATIS Advanced Traveler Information Systems
ATMS Advanced Traffic Management Systems
ATR Automated Traffic Recorder
ATS American Travel Survey (BTS/Census)
ATSAC Automated Traffic Surveillance and Control System (LA)
ATSSA American Traffic Safety Services Association
AVC Automatic Vehicle Classification
AVCG Advanced Vehicle Control/Guidance
AVCI Automatic Vehicle and Cargo Identification
AVCS Advanced Vehicle Control Systems
AVI Automatic Vehicle Identification
AVL Automatic Vehicle Location
AVLS Automatic Vehicle Location System
AVM Automatic Vehicle Monitoring
AVO Average Vehicle Occupancy
AVR Average Vehicle Ridership
AVW Automatic Vehicle Weighing
BAMS Bid Analysis Management System
BLCR Bridge Load Capacity Rating
BMCS Bureau of Motor Carrier Safety
BMS Bridge Management System
BPR Bureau of Public Roads
C/M Climate/Materials
CA Cooperative Agreement
CAA Clean Air Act
CAD Computer-Aided Dispatching
CADD Computer Aided Drafting and Design
CADRE Critical Automated Data Reporting Elements (NHTSA)
CAFE Corporate Average Fuel Efficiency
CAO Chief Administrative Officer
CARB California Air Resources Board
CARD Crash Avoidance Research Data (NHTSA)
CBD Central Business District
CCD Charge-Coupled Device (optical-electrical sensor)
CCIR International Consultative Committee for Radio
CCT Computer Compatible Tape
CDL Commercial Driver's License
CDO Crescent Demonstration Operator
CDP Census Designated Place
CERF Civil Engineering Research Foundation (ASCE)
CERL Construction Engineering Research Laboratory (COE)
CFC Chlorofluorocarbon
CFS Commodity Flow Survey (= CTS)
CG Coordinating Group
CHRIS Chemical Hazard Response Information System
CIE Commission International de l'Eclairage
CIH Compensated Intercorporate Hauling
CIM Classification-in-motion
CIMA Construction Industry Manufacturers Association
CL Carload
CLC Concentrated Load Capacity
CLF Conservation Law Foundation
CMAQ Congestion Mitigation and Air Quality
CMP Congestion Management Program
CMS Changeable Message Sign
CMS Congestion Management System
CMV Commercial Motor Vehicle
CNG Compressed Natural Gas
CNTS Center for National Truck Statistics (UMTRI)
CO Carbon Monoxide
COE Corps of Engineers (U.S. Army)
COFC Container-on-flatcar
COG Council of Government
COTS Commercial Off-the-Shelf
CP Cathodic Protection
CRASH Citizens for Reliable and Safe Highways
CRC Continuously Reinforced Concrete
CSO Council of Standards Organizations
CTIPS Comprehensive Transportation Information and Planning System
CTPP Census Transportation Planning Package
CTS Commodity Transportation Survey
CUTC Council of University Transportation Centers
CVIS Commercial Vehicle Information System
CVO Commercial Vehicle Operations
CVSA Commercial Vehicle Safety Alliance
CWIM Continuous WIM
D Depth (slab thickness)
D-factor Peak directional volume (as percent DHV)
DDHV Directional DHV, vph
DEAL Design Equivalent Axle Load
DESAL Design Equivalent Single Axle Load
DHTM Design Hour Turning Movements
DHV Design Hour Volume = K * ADT (usually 30th highest hour)
DIM Dimension In Motion
DIME Dual Incidence Matrix Encoded files (like TIGER but 1980)
DIN Deutsches Institut fur Normung
DL Driver Licensing
DOR Department of Roads
DRGS Dynamic Route Guidance System
DRP Data Review Package
DVKT Daily Vehicle-Kilometers of Travel
EAL Equivalent Axle Load(ing)
EBL Electronic Bill of Lading (or placarding)
EDS Electronic Data Sharing
EF ESAL Factor
EIA Environmental Impact Assessment
EIA Energy Information Administration
EIA Electronic Industries Association
EIS Emergency Information System
ELP Electronic License Plate
EMS Equipment Management System
EPACT National Energy Policy Act: (1992)
ERG Emergency Response Guidebook
ESAL Equivalent Single-Axle Load
ETA Expected Time of Arrival
ETC Environmental Training Center
ETC Electronic Toll Collection
ETG Expert Task Group
ETTM Electronic Toll and Traffic Management
EV Electric Vehicle
EWL Equivalent Wheel Load
F&PB Family and Personal Business travel
FAI Federal Aid Interstate
FAP Federal-Aid Primary
FARS Fatal Accident Reporting System (NHTSA)
FAS Federal-Aid Secondary
FAUA Federal-Aid Urbanized Area
FEBBS FMWA Electronic Bulletin Board System
FELIC Federation of Engineering institute
FET Federal Excise Tax
FFY Federal Fiscal Year
FHMR Federal Hazardous Materials Regulations
FHWA Federal Highway Administration
FIP Federal Implementation Plan
FMC Fleet Management and Control
FMC Federal Maritime Commission
FMCSR Federal Motor Carrier Safety Regulations
FMIS Fiscal Management Information System
FMVCP Federal Motor Vehicle Control Program
FOIL Federal Outdoor Impact Laboratory
FRA Federal Railroad Administration
FTA Federal Transit Administration (formerly UMTA)
FTP Federal Test Procedure (EPA mpg)
FUT Fuel Use Tax
FWD Falling Weight Deflectometer
GCP Ground Control Point
GCW Gross Combination Weight
GES General Estimates System (NHTSA)
GIS Geographic Information System
GLCTTR Great Lakes Center of Truck Transportation Research
GOE General Operating Expenses
GPS General Pavement Studies/Sections
GPS Global Positioning System
GRF Grants for Research Fellowships
GRIDS Geographical Roadway Information Display System
GRS Grid Reference System
GVW Gross Vehicle Weight
GVWR GVW Rating (max weight)
HAR Highway Advisory Radio
HC Hydrocarbons
HCAADT Heavy Commercial AADT
HCAS Highway Cost Allocation Study
HCM Highway Capacity Manual (TRB)
HD Headway Detection
HEEP Highway Engineering Exchange Program
HELP Heavy vehicle Electronic License Plate (Crescent)
HERS Highway Economic Requirements System
HETP Highway Engineer Training Program
HF Highway Finance
HGV Heavy Goods Vehicle
HH Household
HIAP Highway Investment Analysis Package
HITEC Highway Innovative Technology Evaluation Center
HM Hazardous Materials
HMR Hazardous Materials Regulation
HNDES Highway Network Design and Evaluation System
HOV High Occupancy Vehicle
HP&R Highway Planning and Research
HPA High Priority Area
HPMS Highway Performance Monitoring System
HPNPA High Priority National Program Area
HPR Highway Planning and Research
HRV High Resolution Visible
HSIRS Highway Statistics Information Retrieval System
HSIS Highway Safety Information System
HSP High Speed Photographs
HSWIM High Speed WIM
HTF Highway Trust Fund
HTFS Highway Traffic Forecasting System
HTIMS Highway Technology Information Management System
HUD Head-Up Display
HUF Highway Users Federation
HUFSAM HUF for Safety and Mobility
HV Heavy Vehicle
HVM Heavy Vehicle Management
HVUT Heavy Vehicle Use Tax
HYSIM Highway (Driver) Simulator
I Interstate
I&M Inspection and Maintenance
IAG Interagency Agreement
IANA Intermodal Association of North America
IBTTA International Bridge, Tunnel and Turnpike Association
ICC Interstate Commerce Commission
ICMP Interagency Committee on Metric Policy
IDEA Innovations Deserving Exploratory Analysis
IEEE Institute of Electrical and Electronics Engineers, Inc.
IFME International Federation of Municipal Engineers
IFTA International Fuel Tax Agreement
IHSD Interactive Highway Safety Design
IIHS Insurance Institute for Highway Safety
ILD Induction Loop Detector
IMC Interstate Motor Carrier
IMS Information Management System (SHRP: = NPDB)
IMS Intermodal Management System
IPWF International Public Works Federation
IRF International Road Federation
IRI International Roughness Index
IRP International Registration Plan
IRTE Integrated Road Transport: Environment
IS Interstate System
ISCTA Intermodal Safe Container Transportation Act (1992)
ISO International Standards Organization
ISTEA Intermodal Surface Transportation Efficiency Act
ISWIM Intermediate Speed WIM
ITE Institute of Transportation Engineers
ITM Information Technology Manager (GSA)
ITS Institute of Transportation Studies (UCB) Intelligent Transportation System
ITSP International Technology Scanning Program
IUPT International Union of Public Transport
IVHS Intelligent Vehicle-Highway System
IVS In-Vehicle Signing
JIT Just-In-Time
K-factor Peak-hour volume (e.g., DEV / ADT)
KIP (S) Kilopound(s)
KMPT Kilometerpoint
KRA Kingpin-to-rear axle
L&D Loss and Damage
LCCA Life Cycle Cost Analysis
LCL Less-than-carload
LCS Lane Control Signal
LCV Larger/Longer Combination Vehicle
LDP Level of Development Plan
LDVS Larger Dimensioned Vehicle Study
LEF Load Equivalency Factor
LMS Location and Monitoring Service
LOS Level of Service
LPG Liquefied Petroleum Gas
LRFD Load and Resistance Factor Design
LRT Light Rail Transit
LSF Load Safety Factor
LSWIM Low Speed WIM (< 10 mph)
LT Left Turn
LTAP Local Technical Assistance Program (was RTAP)
LTL Less Than Truckload
LTPP Long-Term Pavement Performance (SHRP)
M85 Methanol 85%, gasoline 15%
MA Minor Arterial
MADT Monthly ADT
MADW Monthly Average Days of the Week
MAWDT Monthly Average Weekday Traffic
MAWET Monthly Average Weekend Traffic
MCARS Motor Carrier Accident Reporting System
MCMIS Motor Carrier MIS
MCR Monthly Classification Ratio
MCREGIS Motor Carrier Regulations Information System
MCSAP Motor Carrier Safety Assistance Program
MDD Multi-Depth Deflectometers
MFRS Mileage Facilities Reporting System
MIT Mobile Inspection Trailer
ML Mainline
MMS Maintenance Management System
MOE Measure of Effectiveness
MOV Multiple-Occupant Vehicle
MPO Metropolitan Planning Organization
MRM Mileage Reference Marker
MSF Maximum Service Flow rate, pcphpl
MTC Metropolitan Transportation Commission
MTC Minimum Tolerable Conditions
MTMC Military Traffic Management Command
MTR Monthly Traffic Ratio
MTT Multi-Trailer Truck
MUD Multi-Use Development
MUTCD Manual on Uniform Traffic Control Devices
MV Motor Vehicles
MVM Million Vehicle Miles
MVMA Motor Vehicle Manufacturers Association
MWR Monthly Weight Ratio
MY Model Year
NAAQNA National Ambient Air Quality Nonattainment Area
NAAQS National Ambient Air Quality Standards
NACE National Association of County Engineers
NACO National Association of County Officials
NAE National Academy of Engineering
NAGHSR National Association of Governors' Highway Safety Representatives
NAPA National Asphalt Pavement Association
NAPCOM National Pavement Cost Model
NARC National Association of Regional Councils
NAS National Academy of Sciences
NASS National Accident Sampling System
NATS North American Trucking Survey (AAR)
NBI National Bridge Inventory
NC-UTCD National Committee on Uniform Traffic Control Devices
NCAP New Car Assessment Program (NHTSA)
NCEER National Center for Earthquake Engineering Research
NCHRP National Cooperative Highway Research Program
NCP Nationally Coordinated Program (of highway RD&T)
NCSA National Center for Statistics and Analysis (NHTSA)
NCSL National Conference of State Legislatures
NCUTLO National Committee on Uniform Traffic Laws and Ordinances
NCWM National Conference on Weights and Measures
NDR National Drivers Register
NDT Non-Destructive Testing
NEMA National Electrical Manufacturers Association
NEPA National Environmental Policy Act (1969)
NGA National Governors' Association
NGRS National Geodetic Reference System
NGV Natural Gas Vehicle
NHI National Highway Institute
NHIPS National Highway Inventory and Performance Study
NHPN National Highway Planning Network
NHS National Highway System
NHTSA National Highway Traffic Safety Administration
NIMC National Incident Management Coalition
NIMS National Information Management System (SHRP = NPDB)
NITL National Industrial Transportation League
NITS National Intercity/Intercounty Travel Survey
NLC National League of Cities
NMCAC National Motor Carrier Advisory Committee
NMT Nonmotorized Transport
NOx Nitrogen Oxides
NPDB National Pavement Data Base (SHRP)
NPRM Notice of Proposed Rulemaking
NPTC National Private Truck Council
NPTS Nationwide Personal Transportation Study
NQI National Quality Initiative
NRC National Research Council
NSC National Safety Council
NSDI National Spatial Data Infrastructure
NSMA National Scale Manufacturers Association
NSPE National Society of Professional Engineers
NTACS Nationwide Truck Activity and Commodity Survey
NTDB National Traffic Data Base (SHRP)
NTIA National Telecommunications and Information Administration
NTIS National Technical Information Service
NTP National Transportation Policy
NTS National Travel Survey
NTSB National Transportation Safety Board
NTSC National Transportation Systems Center (was TSC)
NTSPS National Transportation Strategic Planning Study
NTTIS National Truck Trip Information Survey
NVF New Vehicle Fleet
NVPP National Vehicle Population Profile (Polk)
O/D Origin/Destination
OBC On Board Computer
OFE Other Freeway and Expressway
OHIM Office of Highway Information Management
OOIDA Owner-Operator Independent Drivers Association
OOS Out of Service
OPA Other Principal Arterial
OST Office of Secretary of Transportation
P Terminal Serviceability
P&R Planning and Research
PAR Police Accident Report
PAS Principal Arterial System
PATH Program on Advanced Technology for the Highway
PC Passenger Car
PCA Portland Cement Association
PCC Portland Cement Concrete
PCE PC Equivalent
PCI Pavement Condition Index
PCPH Passenger Cars Per Hour
PCPHPL Passenger Cars Per Hour Per Lane
PCR Pavement Condition Rating
PDC Portable Data Carrier (smart tag)
PFA Pedestrian Federation of America
PHF Peak Hour Factor
PI Principal Investigator
PIARC Permanent International Association of Road Congresses
PIERS Port Import/Export Report Service
PIH Pan-American Institute of Highways
PL Performance Level
PM- 10 Particulate Matter under 10 microns
PMCG Pavement Management Coordinating Group
PMS Pavement Management System
PMT Person Miles of Travel
POD Plain Old Driving
POE Port of Entry
PPA Project Plan Agreement
PR Procurement Request
PRM Proposed Rulemaking
PS&E Plans, Specifications, and Estimates
PS/C Prestressed Concrete
PSR Pavement Serviceability Rating
PSU Primary Sampling Unit
PTC Permanent Traffic Counter
PTF Pavement Testing Facility
PTI Pennsylvania Transportation Institute
PTMS Public Transportation Management System
PTRC Planning and Transport Research and Computation
PUD Planned Unit Development
PWIM Portable WIM
Pt Terminal Serviceability index (asphalt)
Q Traffic volume
R&D Research and Development
R&R Restoration and Rehabilitation
RB Rigid Body
RCI Roadway Congestion Index
RCOC Regional Coordinating Office Contractor (SHRP)
RCU Roadside Communicator Unit
RD&T Research, Development, and Technology
RD&T2 RD&T Transfer
RDF Reliability Design Factor
RDS Radio Data System
RDSS Radio Determination Satellite Services
RDT&E Research, Development, Test, and Evaluation
RIMS Regional Information Management System (SHRP)
RIN Regulatory Identification Number
ROW Right of Way
RQCS Reference Quarter Car Simulation
RRI Reference Roughness Index
RSPA Research and Special Programs Administration
RT Right Turn
RTAP Rural Technical Assistance Program (now LTAP)
RTCC Research and Technology Coordinating Committee
RTCG Research and Technology Coordinating Group
RTDB Regional Traffic Data Base (LTPP)
RTEB Research and Technology Executive Board
RTI Road Transport Informatics
RTOR Right Turn On Red
RTP Regional Transportation Plan
RTPC Research and Technology Program Committee
RTRRM Response Type Road Roughness Meter
RVIA Recreation Vehicle Industry Association
RWIM Roadway WIM
RWIS Road Weather Information Systems
SAC Suburban Activity Center
SAE Society of Automotive Engineers
SASHTO Southeastern Association of State Highway and Transportation Officials
SAW Surface Acoustic Wave
SBIR Small Business Innovation Research
SCM State, County, and Municipal
SCOP Standing Committee on Planning (AASHTO)
SEB Stateline Entry Beacon
SEE Social, Economic, and Environmental factors
SF Service Flow Rate, vph
SFL Service Flow Rate per Lane, vphpl
SHA State Highway Agency
SHAWS Safety Hazard Advance Warning System
SHRP Strategic Highway Research Program
SHV Specialized Hauling Vehicle
SIP State Implementation Plat
SMS Safety Management System
SMS Space Mean Speed (harmonic average)
SN Structural Number
SN Asphalt strength
SNPRM Supplemental NPRM
SOP State of the Practice
SOW Statement of Work
SP&R State Planning and Research
SPS Special Pavement Studies
SRO Site Specific/Related/Other (SHRP code)
SSO Single State Only
STA State Transportation Agency
STAA Surface Transportation Assistance Act (1982)
STAPPA State and Territorial Air Pollution Program Administrators
STH State Highway
STIP Statewide Transportation Improvement Program
STP Surface Transportation Program
STPP Surface Transportation Policy Project
STRS Strategic Transportation Research Study
STT Single Trailer Truck
SU Single-Unit truck
SVRD Single-Vehicle Roadway Departure (accident)
SWIM Slow speed WIM
T&E Test and Evaluation
T-factor Truck percent in DHV
T/L Traffic/Load
T2 Technology Transfer
TAC Transportation Association of Canada
TAD Traffic Accident Data
TAR Transportation Acquisition Regulation
TAZ Traffic Analysis Zone
TCC Transportation Computer Center
TCDH Traffic Control Devices Handbook
TCM Transportation Control Measures
TCP Traffic Control Plan
TDB Traffic Data Base (SHRP)
TDC Traffic Data Collection
TDC Travel Data Center
TDM Transportation Demand Management
TFCU Transportation Federal Credit Union
TPHRC Turner-Fairbank Highway Research Center
TFT Tractor Full-Trailer
THS Territorial Highway System
TIA Traffic Impact Analysis
TIA Telecommunications Industries Association
TIPA Trucks Involved in Fatal Accidents (UMTRI)
TIGER Topologically Integrated Geographic Encoding & Referencing
TIN Traffic Information Network
TIP Trucking Industry Profile (Polk)
TIUS Truck Inventory and Use Study
TL Truckload
TMA Transportation Management Area
TMC Traffic Management Center
TMDS Traffic Monitoring Data Software
TMG Traffic Monitoring Guide
TMS Time Mean Speed (arithmetic average)
TOD Time of Day
TOFC Trailer-on-flatcar
TONS Transportation Office Network System
TRADAS Traffic Data System (Chaparral)
TRB Transportation Research Board (of the NRC)
TRDF Texas Research and Development Foundation
TRF Transportation Research Forum
TRI Trucking Research Institute (ATA)
TRIP The Road Information Program
TRIS Transportation Research Information Services
TRO Travel Reduction Ordinance
TRRL Transportation Road Research Laboratory
TSC Transportation Systems Center (Now NTSC)
TSM Transportation System Management
TST Tractor Semi-Trailer
TTI Texas Transportation Institute
TVT Traffic Volume Trends
TWC Two-Way Communication
TWS Truck Weight Study
UA Urbanized Area
UBOA United Bus Owners of America
UCBITS University of CA Berkeley Institute of Transportation Studies
UIIA Uniform Intermodal Interchange Agreement
UMTA Urban Mass Transportation Administration (now FTA)
UMTRI University of Michigan Transportation Research Institute
USCC United States Chamber of Commerce
UTC Urban Traffic Control
UTPS Urban Transportation Planning System
V Hourly volume, vph or vphpl
V Design speed
V/C Volume/Capacity
V/SF Volume/Service Flow
VAN Value Added Network
VE Value Engineering
VHD Vehicle-hours of delay
VHT Vehicle-Hours of Travel
VIDS Video Incident Detection System
VIN Vehicle Identification Number
VIP Video Image Processing
VKT Vehicle-Kilometers of Travel
VM Vehicle-Miles
VMS Variable Message Sign
VMT Vehicle-Miles Traveled/of Travel
VO Vehicle Occupancy
VOC Volatile Organic Compounds
VPD Vehicles Per Day
VPH Vehicles Per Hour
VPHPL Vehicles Per Hour Per Lane
VRC Vehicle/Roadside Communications
VS Vehicle Speed
VSC Variable Speed Control
VTC Volume to Capacity
WASHTO Western Association of State Highway and Transportation Officials
WAVM Wide-Area Vehicle Monitoring
WCTR World Conference on Transport Research
WES Waterways Experiment Station
WET Wetland Evaluation Technique
WHI Western Highway Institute
WIM Weigh-In-Motion
WS Weigh Station
ZAC Zone Access Control
ZEV Zero Emission Vehicle

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