| AADTT | Annual Average Daily Truck Traffic |
| AAR | Association of American Railroads |
| AASHTO | American Association of State Highway Transportation Officials |
| ADT | Average Daily Traffic |
| AERR | Air Emissions Reporting Requirements |
| ATRI | American Transportation Research Institute |
| BAC | Blood Alcohol Concentration |
| BCA | Benefit-Cost Analysis |
| BNSF | Burlington Northern and Santa Fe |
| BTS | Bureau of Transportation Statistics |
| CFS | Commodity Flow Survey |
| CMAQ | Congestion Mitigation and Air Quality Improvement Program |
| DOC | Department of Commerce |
| DOT | Department of Transportation |
| EIA | U.S. Energy Information Administration |
| EPA | Environmental Protection Agency |
| F&OS | Financial and Operating Statistics |
| FAC | Freight Advisory Committee |
| FAF | Freight Analysis Framework |
| FARS | Fatality Analysis Reporting System |
| FAST | Fixing America’s Surface Transportation (Act) |
| FDOT | Florida Department of Transportation |
| FHWA | Federal Highway Administration |
| FMCSA | Federal Motor Carrier Safety Administration |
| FPM | Freight Performance Measurement |
| FRA | Federal Railroad Administration |
| GDP | Gross Domestic Product |
| GES | General Estimates System |
| GPS | General Pavement Study |
| GPS | Global Positioning System |
| HPMS | Highway Performance Monitoring System |
| I-95 | CC I-95 Corridor Coalition |
| IFTA | International Fuel Tax Association |
| ISTEA | Intermodal Surface Transportation Efficiency Act |
| ITS | Intelligent Transportation System |
| LTPP | Long-Term Pavement Performance |
| MAP-21 | Moving Ahead for Progress in the 21st Century |
| MARAD | U.S. Maritime Administration |
| MDOT | Maryland Department of Transportation |
| MPO | Metropolitan Planning Organization |
| MTS | Marine Transportation System |
| NAFTA | North American Free Trade Agreement |
| NATS | North American Transportation Statistics |
| NCFRP | National Cooperative Freight Research Program |
| NCHRP | National Cooperative Highway Research Program |
| NHFN | National Highway Freight Network |
| NHFP | National Highway Freight Program |
| NHS | National Highway System |
| NHTS | National Household Travel Survey |
| NHTSA | National Highway Traffic Safety Administration |
| NPMRDS | National Performance Management Research Data Set |
| NPTS | Nationwide Personal Transportation Surveys |
| O/D | Origin and Destination |
| ODOT | Ohio Department of Transportation |
| ODOT | Oregon Department of Transportation |
| OPA-90 | Oil Pollution Act of 1990 |
| OTC | Oregon Transportation Commission |
| PAR | Police Accident Report |
| PHMSA | Pipeline and Hazardous Material Safety Administration |
| PUM | Public Use Microdata |
| SAFETEA-LU | Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users |
| SHRP | Strategic Highway Research Program |
| SPS | Specific Pavement Studies |
| STB | State Transportation Board |
| TEA-21 | Transportation Equity Act for the 21st Century |
| TEU | Twenty-Foot Equivalent Unit |
| TOFC | Trailer-on-Freight-Car |
| TRB | Transportation Research Board |
| TSA | Traffic Safety Administration |
| TTI | Travel Time Index |
| USDOT | U.S. Department of Transportation |
| VIUS | Vehicle Inventory and Use Survey |
| VMT | Vehicle Miles Traveled |
| WSDOT | Washington State Department of Transportation |
