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| Orders > M 1325.1D - Correspondence Manual > Appendix B |
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Spell out the first reference to any acronym used, and place the acronym in parentheses after it.
On internal memorandums when the acronym is recognized by everyone, it does not have to be spelled out.
A list of common FHWA acronyms and other Federal government acronyms is included.
A list of preferred State highway agencies acronyms is also included. These preferred acronyms are to be used in FHWA correspondence.
| AA | Associate Administrator |
|---|---|
| AAA | American Automobile Association or American Association of Appraisers |
| AADT | Annual Average Daily Traffic |
| AAMVA | American Association of Motor Vehicle Administrators |
| AAMVAnet | American Association of Motor Vehicle Administrators' communication network |
| AAR | Association of American Railroads |
| AARP | American Association of Retired Persons |
| AASHO | American Association of State Highway Officials (old name) |
| AASHTO | American Association of State Highway and Transportation Officials (current name) |
| AAST | Atlanta Administrative Services Team |
| ABA | American Bus Association |
| AC | Access Control |
| AC | Asphalt Concrete |
| ACEC | American Consulting Engineers Council |
| ACHP | Advisory Council on Historical Preservation |
| ACI | American Concrete Institute |
| ACIR | Advisory Commission on Intergovernmental Affairs |
| ACL | Alternate Concentration Limit |
| ACM | Asbestos Containing Materials |
| ACPA | American Concrete Pavement Association or American Concrete Pipe Association |
| ADA | Americans with Disabilities Act or Assistant Division Administrator |
| ADH | Appalachian Development Highways |
| ADHS | Appalachian Development Highway System |
| ADP | Automated Data Processing |
| ADT | Average Daily Traffic |
| AE | Annual Element |
| AGC | Association of General Contractors |
| AHATF | American Highway Association Trust Fund |
| AHL | Access Highways to Lakes |
| AHUA | American Highway Users Alliance |
| AI | Asphalt Institute |
| AISI | American Iron and Steel Institute |
| ALAR | Appalachian Local Access Roads |
| ALF | Accelerated Loading Facility [part of Pavement Testing Facility (PTF)] |
| AMPO | Association of Metropolitan Planning Organizations |
| ANPRM | Advance Notice of Proposed Rulemaking |
| AOTR | Agreement Officer's Technical Representative |
| APBP | Association of Pedestrian & Bicycle Professionals |
| APWA | American Public Works Association |
| AQCR | Air Quality Control Region |
| AQMA | Air Quality Maintenance Area |
| ARAR | Applicable, Relevant, and Appropriate Requirements |
| ARC | Appalachian Regional Commission |
| AREA | American Railway Engineering Association |
| ARPA | Archeological Resource Protection Act |
| ARRL | American Radio Relay League |
| ARTBA | American Road and Transportation Builders Association |
| ASCE | American Society of Civil Engineers |
| ASLRA | American Short Line Railroad Association |
| ASTM | American Society for Testing and Materials, International |
| ATA | American Trucking Associations |
| ATA | Association of Transportation Archaeologists |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| ATSSA | American Traffic Safety Services Administration |
| AWP | Annual Work Plan |
| B/C | Benefit Cost |
| BA | Biological Assessment |
| BAC | Blood Alcohol Concentration (or Content) |
| BAT | Best Available Technology |
| BCA | Bureau of Contract Appeals |
| BCT | Breakaway Cable Terminal |
| BEST | Basic Extraction Sludge Treatment |
| BFO | Best and Final Offer |
| BIA | Bureau of Indian Affairs |
| BLM | Bureau of Land Management |
| BMP | Best Management Practices |
| BNIP | Bridge Needs and Investment Process |
| BPI | Bid Price Index |
| BRRA | Bus Regulatory Reform Act |
| BTS | Bureau of Transportation Statistics |
| C-SHRP | Canadian Strategic Highway Research Program |
| C/A | Control of Access |
| C&M | Construction and Maintenance |
| CA/T | Central Artery/Harbor Tunnel |
| CA | Certification Acceptance |
| CAA | Clean Air Act |
| CADDS | Computer Aided Design and Drafting System |
| CADRE | Critical Automated Data Reporting Elements |
| CAP | Capacity Assurance Plan |
| CAPE | Commercial Accident Prevention and Evaluation |
| CAS | Center for Auto Safety |
| CBD | Central Business District |
| CBO | Congressional Budget Office |
| CBRA | Coastal Barrier Resource Act |
| CCH | Commerce Clearing House |
| CCRL | Cement and Concrete Reference Laboratory |
| CDL | Commercial Driver's License |
| CDLIS | Commercial Driver's License Information System |
| CE | Categorical Exclusion |
| CEA | Council of Economic Advisors |
| CEQ | Council on Environmental Quality |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act ("Superfund") |
| CERCLIS | CERCLA Information System |
| CERF | Civil Engineering Research Foundation |
| CFCs | Chlorofluorocarbons |
| CFR | Code of Federal Regulations |
| CH | Critical Habitat |
| CHS | Citizens for Highway Safety |
| CMA | Calcium Magnesium Acetate |
| CMAQIP | Congestion Mitigation and Air Quality Improvement Program |
| CMB | Concrete Median Barrier |
| CMV | Commercial Motor Vehicle |
| CMVSA | Commercial Motor Vehicle Safety Act of 1986 |
| CO2 | Carbon Dioxide |
| CO | Carbon Monoxide |
| COE | U.S. Army Corps of Engineers |
| COHMED | Cooperative Hazardous Materials Enforcement Development |
| CoP | Community of Practice |
| COOP | Continuity of Operations Plan |
| COTR | Contracting Officer's Technical Representative |
| CP | Cathodic Protection |
| CPLM | Civilian Personnel Law Manual |
| CR | Compliance Review |
| CRASH | Canadians for Responsible and Safe Highways or Citizens for Responsible and Safe Highways |
| CRP | Combined Road Plan |
| CRREL | Cold Region Research and Engineering Laboratory |
| CRS | Congressional Research Service |
| CRT | Controlled Releasing Terminal |
| CTIP | Coordinated Federal Lands Highway Technology Implementation Program |
| CTPP | Census Transportation Planning Package |
| CTTAG | Cargo Tank Technical Advisory Group |
| CUTC | Consortium of University Transportation Centers |
| CVO | Commercial Vehicle Operations |
| CWA | Clean Water Act |
| CY | Calendar Year |
| CZ | Clear Zone or Coastal Zone |
| CZM | Coastal Zone Management |
| CZMA | Coastal Zone Management Act |
| DA | Division Administrator |
| DBA | Decibels (A-weighted) |
| DBE | Disadvantaged Business Enterprise |
| DEACON | Drug Enforcement Assistance and Coordination |
| DFS | Director of Field Services |
| DHS | Department of Homeland Security |
| DHV | Design Hourly Volume |
| DIAP | Drug Interdiction Assistance Program |
| DLCSC | Driver Licensing and Control Subcommittee |
| DMV | Department of Motor Vehicles |
| DOA | Department of the Army |
| DOC | Department of Commerce |
| DOD | Department of Defense |
| DOE | Department of Energy |
| DOI | Department of the Interior |
| DOJ | Department of Justice |
| DOL | Department of Labor |
| DOT | U.S. Department of Transportation |
| DP | Demonstration Projects |
| DS&S | Decent, Safe and Sanitary |
| DSI | Detailed Site Investigation |
| DVMT | Daily Vehicle Miles Traveled |
| EA | Environmental Assessment or Enterprise Architecture |
| EA/FONSI | Environmental Assessment/Finding of No Significant Impact |
| EAJA | Equal Access to Justice Act |
| EAP | Employee Assistance Program |
| ECS | Emergency Communications System |
| EDA | Economic Development Administration |
| EHS | Extremely Hazardous Substance |
| EHTR | Emergency Highway Traffic Regulation |
| EIS | Environmental Impact Statement |
| EO | Executive Order |
| EP | Experimental Project(s) |
| EPA | Environmental Protection Agency |
| ER | Emergency Relief |
| ESA | Endangered Species Act |
| ETA | Educational and Technical Assistance |
| ETAG | Explosives Technical Advisory Group |
| ETBE | Ethyl Tertiary Butyl Ether |
| FA | Federal aid |
| FAA | Federal Aviation Administration |
| FACA | Federal Advisory Committee Act |
| FAI | Federal-aid Interstate |
| FAP | Federal-aid primary |
| FAPG | Federal-aid Policy Guide |
| FAR | Federal Acquisition Regulations |
| FARS | Fatal Accident Reporting System |
| FAS | Federal-aid secondary |
| FAST | Facilitate Acceleration Through Special Techniques |
| FAU | Federal-aid urban |
| FAUS | Federal-aid urban system |
| FCC | Federal Communications Commission |
| FEMA | Federal Emergency Management Agency |
| FH | Forest Highway |
| FHA | Federal Housing Administration |
| FHBM | Flood Hazard Boundary Map |
| FHWA | Federal Highway Administration |
| FIA | Federal Insurance Administration |
| FICCDC | Federal Interagency Coordinating Committee on Digital Cartography |
| FIF | Flood Insurance Fund |
| FIFRA | Federal Insecticide, Fungicide, and Rodenticide Act |
| FIP | Federal Implementation Plan |
| FIRM | Flood Insurance Rate Map |
| FMCSA | Federal Motor Carrier Safety Administration |
| FMCSR | Federal Motor Carrier Safety Regulations |
| FMSR | Federal Merit System Reporter |
| FMV | Fair Market Value |
| FMVECP | Federal Motor Vehicle Emission Control Program |
| FMVSS | Federal Motor Vehicle Safety Standards |
| FOIA | Freedom of Information Act |
| FOIL | Federal Outdoor Impact Laboratory |
| FORSCOM | Forces Command |
| FOT | Field Operational Test |
| FPF | Federal Preservation Forum |
| FPPA | Farmland Protection Policy Act |
| FR | Federal Register |
| FR2d | Federal Reporter, 2nd Series |
| FRA | Federal Railroad Administration |
| FSA | Flexible Spending Account |
| F-SHRP | Future Strategic Highway Research Program |
| FSP | Field Sampling Plan |
| FSS | Federal Specifications and Standards |
| FSupp | Federal Supplement |
| FTA | Federal Transit Administration |
| FTCA | Federal Tort Claims Act |
| FTE | Full-time Equivalent |
| FTP | Federal Test Procedure |
| FTR | Federal Travel Regulations |
| FWCA | Fish and Wildlife Coordination Act |
| FWPCA | Federal Water Pollution Control Act |
| FWS | Fish and Wildlife Service |
| FY | Fiscal Year |
| GAO | General Accounting Office |
| GIS | Geographic Information System |
| GLP | Good Laboratory Practice |
| GNE | General Network Editor |
| GOE | General Operating Expense |
| GPM | Grams Per Mile |
| GPS | Global Positioning System |
| GRIS | Geographical Roadway Information System |
| GRR | Great River Road |
| GSA | General Services Administration |
| GVWR | Gross Vehicle Weight Rating |
| GWPS | Groundwater Protection Standard |
| GWR | Government Wide Regulation |
| H/WSTAG | Hazardous Waste and Substance Technical Advisory Group |
| H-T&IC | House - Transportation and Infrastructure Committee |
| HABS | Historic American Building Survey |
| HAD | Office of the Associate Administrator for Administration |
| HAER | Historic American Engineering Record |
| HAGL | Height Above Ground Level |
| HAZMAT | Hazardous Materials |
| HBCU | Historically Black Colleges and Universities |
| HBRRP | Highway Bridge Replacement & Rehabilitation Program |
| HC | Hydrocarbons |
| HCC | Office of the Chief Counsel |
| HCM | Office of the Associate Administrator for Corporate Management or Highway Capacity Manual |
| HCR | Office of the Associate Administrator for Civil Rights |
| HCS | Highway Capacity Software or Hazard Communication Standards |
| HELP | Highway Electronic License Plate |
| HEP | Office of the Associate Administrator for Planning, Environment and Realty or Hazard Elimination Program |
| HERS | Highway Economic Requirements System |
| HETP | Highway Engineer Trainee Program |
| HF | High Frequency |
| HFCC | Human Factor Coordinating Committee |
| HFL | Office of the Associate Administrator for Federal Lands Highway |
| HFO | Highway Field Operations |
| HHS | Department of Health and Human Services |
| HIF | Office of the Associate Administrator for Infrastructure |
| HLDI | Highway Loss Data Institute |
| HMAC | Hazardous Materials Advisory Council |
| HMIS | Hazardous Materials Information System |
| HMIX | Hazardous Materials Exchange |
| HMPM | Hazardous Materials Program Manager |
| HMR | Hazardous Materials Regulations |
| HOA | Office of the Federal Highway Administrator |
| HOP | Office of the Associate Administrator for Operations |
| HOV | High Occupancy Vehicle |
| HPA | Office of the Associate Administrator for Public Affairs |
| HPD | Office of the Associate Administrator for Professional Development |
| HPL | Office of the Associate Administrator for Policy |
| HPMS | Highway Performance Monitoring System |
| HPNPA | High Priority National Program Area |
| HPTR | Highway Planning Technical Reports |
| HRS | Hazardous Ranking System |
| HRT | Office of the Associate Administrator for Research, Development, and Technology |
| HSA | Office of the Associate Administrator for Safety |
| HSIP | Highway Safety Improvement Program |
| HSIRS | Highway Statistics Information Retrieval System |
| HSIS | Highway Safety Information System |
| HSM | Highway Safety Manual |
| HTF | Highway Trust Fund |
| HTIMS | Highway Technology Information Management System |
| HUD | Department of Housing and Urban Development |
| HUF | Highway Users Federation |
| HUFSAM | Highway Users Federation for Safety and Mobility |
| HVUT | Heavy Vehicle User Tax |
| HW | Hazardous Waste |
| HWM | Hazardous Waste Management |
| HWTC | Hazardous Waste Treatment Council |
| I/M | Inspection and Maintenance |
| I/D | Incentive/Disincentive |
| IACP | International Association of Chiefs of Police |
| IADB | Inter-American Development Bank |
| IANA | Intermodal Association of North America |
| IBT | International Brotherhood of Teamsters |
| IBTTA | International Bridge, Tunnel, and Turnpike Association |
| IC | Interstate Construction |
| ICC | Interstate Commerce Commission |
| ICE | Interstate Construction Estimate |
| IDEA | Innovations Deserving Exploratory Analysis |
| IDLH | Immediately Dangerous to Life or Health |
| IESNA | Illuminating Engineering Society of North America |
| IHSDM | Interactive Highway Safety Design Model |
| IID | Inspections-in-Depth |
| IIHS | Insurance Institute for Highway Safety |
| IMIS | Integrated Motorist Information System |
| IPCC | Intergovernmental Panel on Climate Change |
| IPWF | International Public Works Federation |
| IRF | International Road Federation |
| IRIS | Integrated Risk Information System (U.S. EPA) |
| IRM | Information Resource Management |
| IRS | Internal Revenue Service |
| IRWA | International Right-of-Way Association |
| IS | Interstate System |
| ISA | Initial Site Assessment |
| ISTEA | Intermodal Surface Transportation Efficiency Act of 1991 |
| ITE | Institute of Transportation Engineers |
| ITS | Intelligent Transportation System |
| IVHSA | Intelligent Vehicle-Highway Systems of America |
| IVSA | Intelligent Vehicle Society of America |
| IX | Interstate Transfer (Substitute) |
| JC | Just Compensation |
| KFACTOR | Percentage of Daily VMT in Peak Hour |
| KSA | Knowledge, Skills and Abilities |
| LAN | Local Area Network |
| LAST | Lakewood Administrative Services Team |
| LC50 | Medical Lethal Concentration |
| LCV | Longer Combination Vehicles |
| LOS | Level of Service or Length of Service |
| LPA | Local Public Agency |
| LSR | Local Streets and Roads |
| LTAP | Local Technical Assistance Program |
| LTPP | Long Term Pavement Performance |
| LTS | Legislative Tracking System |
| LUST | Leaking Underground Storage Tank |
| MADD | Mothers Against Drunk Driving |
| MAGLEV | Magnetic Levitation |
| MAI | Member Appraisal Institute |
| MARAD | Maritime Administration |
| MBE | Minority Business Enterprise |
| MCA | Motor Carrier Act |
| MCSA | Motor Carrier Safety Act |
| MCSAP | Motor Carrier Safety Assistance Program |
| MFRR | Minimum Financial Responsibility Regulations |
| MG/M | Micrograms Per Cubic Meter |
| MIDC | Mortgage Interest Differential Computation |
| MOA | Memorandum of Agreement |
| MOU | Memorandum of Understanding |
| MPG | Miles Per Gallon |
| MPH | Miles Per Hour |
| MPO | Metropolitan Planning Organization |
| MSA | Metropolitan Statistical Area |
| MSDS | Material Safety Data Sheet |
| MSPB | Merit System Protection Board |
| MSW | Municipal Solid Waste |
| MTMC | Military Traffic Management Command |
| MUTCD | Manual on Uniform Traffic Control Devices |
| MVA | Motor Vehicle Administration |
| MVMA | Motor Vehicle Manufacturers' Association |
| MVMT | Million Vehicle Miles of Travel |
| MWAA | Metropolitan Washington Airports Authority |
| NAAQS | National Ambient Air Quality Standards |
| NAC | Noise Abatement Criteria |
| NACE | National Association of County Engineers |
| NAPA | National Asphalt Pavement Association |
| NARA | National Archives and Records Administration |
| NARC | National Association of Regional Councils |
| NBI | National Bridge Inventory |
| NBIS | National Bridge Inspection Standards |
| NCAC | National Crash Analysis Center |
| NCHRP | National Cooperative Highway Research Program |
| NCP | National Contingency Plan |
| NCS | National Communications System |
| NCSHPO | National Conference of State Historic Preservation Officers |
| NDER | National Defense Executive Reserve |
| NDTA | National Defense Transportation Association |
| NEPA | National Environmental Policy Act |
| NEPT | National Experimental Projects Tabulation |
| NESHAP | National Emission Standard for Hazard Air Pollutants |
| NETS | Network of Employers for Traffic Safety |
| NFIP | National Flood Insurance Program |
| NHPA | National Historic Preservation Act |
| NHS | National Highway System |
| NHTSA | National Highway Traffic Safety Administration |
| NIOSH | National Institute of Occupational Safety and Health |
| NITL | National Industrial Transportation League |
| NMCAC | National Motor Carrier Advisory Committee |
| NMFS | National Marine Fisheries Service |
| NN | National Network |
| NOAA | National Oceanic and Atmospheric Administration |
| NOX | Nitrogen Oxides |
| NPL | National Priorities List |
| NPRM | Notice of Proposed Rulemaking |
| NPS | Nonpoint Source or National Park Service |
| NPTS | National Personal Transportation Study |
| NRHP | National Register of Historic Places |
| NRC | National Response Center or National Research Council |
| NRECA | National Rural Electric Cooperative Association |
| NSA | National Stone Association |
| NSCI | National System Condition Index |
| NSEP | National Security Emergency Preparedness |
| NSPE | National Society of Professional Engineers |
| NTIS | National Technical Information Service |
| NTP | National Toxicology Program or National Transportation Policy |
| NTW | National Transportation Week |
| OFCCP | Office of Federal Contract Compliance Programs |
| OIG | Office of the Inspector General |
| OMB | Office of Management and Budget |
| OPA | Other Principal Arterial |
| OPM | Office of Personnel Management |
| OSHA | Occupational Safety and Health Administration |
| OJT | On-the-Job Training |
| OAAA | Outdoor Advertising Association of America |
| OLI | Operation Lifesaver, Inc. |
| OIC | Officer in Charge |
| OOS | Out-of-Service |
| OAS | Organization of American States |
| OECD | Organization for Economic Cooperation and Development |
| PAC | Presidential Advisory Committee or Political Action Committee |
| PAH | Polynuclear Aromatic Hydrocarbons |
| PAHC | Pan American Highway Congress |
| PBCAT | Pedestrian & Bicycle Crash Analysis Tools |
| PBIC | Pedestrian & Bicycle Information Center |
| PCA | Portland Cement Association |
| PCB | Portland Concrete Barrier |
| PCBs | Polychlorinated Biphenyls |
| PCC | Portland Cement Concrete |
| PCP | Private Carriers of Passengers |
| PE | Preliminary Engineering |
| PEC | Permanent Executive Committee |
| PF | Planning Funds |
| PFCRA | Program Fraud Civil Remedies Act |
| PI | Periodic Inspection |
| PIARC | Permanent International Association of Road Congresses |
| PIH | Pan American Institute of Highways |
| PIL | Policy Interpretation Library |
| PL | Public Law |
| PLH | Public Lands Highway |
| PM | Property Management, Pavement Marking, or Particulate Matter 10 Microns |
| PMG | Pavement Management Group |
| PMRS | Personnel Management Recognition System |
| PMS | Pavement Management System or Personnel Management System |
| POV | Privately Owned Vehicle |
| PRP | Potentially Responsible Party |
| PS&E | Plans, Specifications, and Estimates |
| PSI | Preliminary Site Investigation |
| PTDIA | Professional Truck Drivers Institute of America |
| PTF | Pavement Testing Facility |
| PTSA | Property Transaction Site Assessment |
| QA | Quality Assurance |
| QAPP | Quality Assurance Project Plan |
| QC | Quality Control |
| QRS | Quick Response System |
| R&D | Research and Development |
| R&T | Research and Technology |
| RAC | Response Action Contractor or Research Advisory Committee (AASHTO) |
| RAM | Radioactive Materials |
| RAP | Remedial Action Plan or Relocation Assistance Program |
| RC | Resource Center |
| RCA | Record of Coordination and Approval |
| RCM | Resource Center Manager |
| RCRA | Resource, Conservation and Recovery Act |
| REA | Rural Electrification Administration |
| RFP | Request for Proposal |
| RFW | Regulatory Floodway |
| RHP | Replacement Housing Payment |
| RI/FS | Remedial Investigation/Feasibility Study |
| RIN | Regulatory Information Number |
| RMCL | Recommended Maximum Contaminant Level |
| ROADS | Recruitment Online Application System |
| ROD | Record of Decision |
| ROW | Right-of-Way |
| RP | Restoration Priority (System) |
| RPI | Railway Progress Institute |
| RQ | Reportable Quality |
| RRL | Regulation Reform Legislation |
| RSPA | Research and Special Programs Administration |
| RTAG | Radioactive Technical Advisory Group |
| RTOR | Right-Turn-On-Red |
| RVP | Reid Vapor Pressure |
| SAC | Structures Advisory Council |
| SAE | Society of Automotive Engineers |
| SAFETEA | Safe, Accountable, Flexible and Efficient Transportation Equity Act of 2003 |
| SAP | Sampling and Analysis Plan |
| SARA | Superfund Amendments and Reauthorization Act |
| SAS | Statistical Analysis System |
| SBA | Small Business Administration |
| SBIR | Small Business Innovation Research |
| SCOH | Standing Committee on Highways (AASHTO) |
| SCOR | Standing Committee on Research (AASHTO) |
| SCS | Soil Conservation Service |
| SD | State Director |
| SEEI | Social, Economic, and Environmental Impact |
| SEP | State Enforcement Plan |
| SES | Senior Executive Service |
| SHA | State Highway Agency |
| SHPO | State Historic Preservation Officer (or Office) |
| SHRP | Strategic Highway Research Program |
| SHVs | Specialized Hauling Vehicles |
| SIC | Standard Industrial Classification |
| SIP | State Implementation Plan |
| SITE | Site Impact Traffic Evaluation |
| SITE | Superfund Innovative Technology Evaluation |
| SOD | Staff Office Director |
| SOV | Single Occupant Vehicle |
| SOW | Statement of Work |
| SPF | Simplified Project Forecasting |
| SP&R | State Planning and Research |
| SQG | Small Quantity Generator |
| SR | State Route |
| SREA | Society of Real Estate Appraisers |
| STARC | State Area Commanders |
| SS | Safety Specialist |
| STAA | Surface Transportation Assistance Act |
| STURAA | Surface Transportation and Uniform Relocation Assistance Act |
| T2 | Technology Transfer |
| TA | Technical Advisory |
| TAC | Technical Advisory Committee |
| TAG | Technical Advisory Group |
| TAR | Transportation Acquisition Regulation |
| TAT | Technical Assistance Team |
| TCD | Traffic Control Device |
| TCM | Transportation Control Measure |
| TCP | Traffic Control Plan |
| TEA-21 | Transportation Equity Act for the 21st Century |
| THE | The Highway Emulator |
| TIFIA | Transportation Infrastructure Finance and Innovation Act |
| TIP | Transportation Improvement Program |
| TMA | Transportation Management Association |
| TMC | Travel Management Center |
| TMDL | Total Maximum Daily Load |
| TMG | Traffic Monitoring Guide |
| TMV | Toxicity, Mobility or Volume |
| TPF | Transportation Pooled Fund |
| TPQ | Threshold Planning Quality |
| TQM | Total Quality Management |
| TRB | Transportation Research Board |
| TRIP | The Road Information Program |
| TRL | Transcontinental Refrigerated Lines |
| TRRL | Transportation Road Research Laboratory (United Kingdom) |
| TS&W | Truck Size and Weight |
| TSA | Transportation Security Administration |
| TSCA | Toxic Substances Control Act |
| TSI | Transportation Safety Institute |
| TSM | Transportation System Management |
| TSP | Thrift Savings Plan |
| TSP | Telecommunications Service Priority (System) |
| TTAP | Tribal Technical Assistance Program |
| TTI | Texas Transportation Institute |
| TTMA | Truck Trailer Manufacturers Association |
| TTSA | Tandem Truck Safety Act |
| TVA | Tennessee Valley Authority |
| TWS | Truck Weight Study |
| UGPTI | Upper Great Plains Transportation Institute |
| U.S.C. | United States Code |
| ULCC | Utility Location and Coordination Council |
| UMTRI | University of Michigan Transportation Research Institute |
| UR | Uneconomic Remnant |
| URAA | Uniform Relocation Assistance Act |
| USC | United States Code |
| USCA | United States Code Annotated |
| USCM | U.S. Conference of Mayors |
| USDA | U.S. Department of Agriculture |
| USFS | U.S. Forest Service |
| USGS | U.S. Geological Survey |
| USPS | U.S. Postal Service |
| UST | Underground Storage Tank |
| UTC | University Transportation Center |
| UTPP | Urban Transportation Planning Package |
| UTPS | Urban Transportation Planning System |
| UVC | Uniform Vehicle Code |
| V/C | Volume/Capacity Ratio |
| VA | Department of Veterans Affairs |
| VE | Value Engineering |
| VHT | Vehicle Hours of Travel |
| VMT | Vehicle Miles Traveled or Vehicle Miles of Travel |
| VOC | Volatile Organic Compound(s) |
| VPH | Vehicles Per Hour |
| VRM | Visual Resource Management |
| VSW | Vehicle Size and Weight |
| WBE | Women's Business Enterprise |
| WES | Waterways Experiment Station [part of COE] |
| WIM | Weigh-in-Motion |
| WIPP | Waste Isolation Pilot Program |
| WMATA | Washington Metropolitan Area Transit Authority |
| ALDOT | Alabama Department of Transportation |
|---|---|
| ADOTPF | Alaska Department of Transportation & Public Facilities |
| ADOT | Arizona Department of Transportation |
| AHTD | Arkansas State Highway and Transportation Department |
| Caltrans | California Department of Transportation |
| CDOT | Colorado Department of Transportation |
| ConnDOT | Connecticut Department of Transportation |
| DelDOT | Delaware Department of Transportation |
| DC DPW | District of Columbia Department of Public Works |
| FDOT | Florida Department of Transportation |
| GDOT | Georgia Department of Transportation |
| Guam DPW | Guam Department of Public Works |
| HDOT | Hawaii Department of Transportation |
| ITD | Idaho Transportation Department |
| IDOT | Illinois Department of Transportation |
| INDOT | Indiana Department of Transportation |
| IowaDOT | Iowa Department of Transportation |
| KDOT | Kansas Department of Transportation |
| KYTC | Kentucky Transportation Cabinet |
| LaDOTD | Louisiana Department of Transportation and Development |
| MaineDOT | Maine Department of Transportation |
| Marianas DPW | Marianas Department of Public Works (Commonwealth of Northern Marianas Islands) |
| MDOT | Maryland Department of Transportation |
| MassHighway | Massachusetts Highway Department |
| MDOT | Michigan Department of Transportation |
| Mn/DOT | Minnesota Department of Transportation |
| MDOT | Mississippi Department of Transportation |
| MoDOT | Missouri Department of Transportation |
| MDT | Montana Department of Transportation |
| NDOR | Nebraska Department of Roads |
| NDOT | Nevada Department of Transportation |
| NHDOT | New Hampshire Department of Transportation |
| NJDOT | New Jersey Department of Transportation |
| NMDOT | New Mexico Department of Transportation |
| NYSDOT | New York Department of Transportation |
| NCDOT | North Carolina Department of Transportation |
| NDDOT | North Dakota Department of Transportation |
| ODOT | Ohio Department of Transportation |
| ODOT | Oklahoma Department of Transportation |
| ODOT | Oregon Department of Transportation |
| PENNDOT | Pennsylvania Department of Transportation |
| DTPW | Puerto Rico Department of Transportation & Public Works |
| RIDOT | Rhode Island Department of Transportation |
| American Samoa DPW | American Samoa Department of Public Works |
| SCDOT | South Carolina Department of Transportation |
| SDDOT | South Dakota Department of Transportation |
| TDOT | Tennessee Department of Transportation |
| TxDOT | Texas Department of Transportation |
| UDOT | Utah Department of Transportation |
| VTrans | Vermont Agency of Transportation |
| VDOT | Virginia Department of Transportation |
| VIDPW | Virgin Islands Department of Public Works |
| WSDOT | Washington State Department of Transportation |
| WVDOT | West Virginia Department of Transportation |
| WisDOT | Wisconsin Department of Transportation |
| WYDOT | Wyoming Department of Transportation |
| Previous: Appendix A - General Editorial Rules | Next: Appendix C - External and Internal Forms of Address |
