• Virginia HOT Lanes website, http://www.virginiahot lanes.com/beltway-project-info.asp
| Abbreviations used without definitions in TRB publications: | |
| American Association of Airport Executives | |
| American Association of State Highway Officials | |
| American Association of State Highway and Transportation Officials | |
| Airports Council International-North America | |
| Airport Cooperative Research Program | |
| Americans with Disabilities Act | |
| American Public Transportation Association | |
| American Society of Civil Engineers | |
| American Society of Mechanical Engineers | |
| American Society for Testing and Materials | |
| Air Transport Association | |
| American Trucking Associations | |
| Community Transportation Association of America | |
| Commercial Truck and Bus Safety Synthesis Program | |
| Department of Homeland Security | |
| Department of Energy | |
| Environmental Protection Agency | |
| Federal Aviation Administration | |
| Federal Highway Administration | |
| Federal Motor Carrier Safety Administration | |
| Federal Railroad Administration | |
| Federal Transit Administration | |
| Institute of Electrical and Electronics Engineers | |
| Institute of Transportation Engineers | |
| National Aeronautics and Space Administration | |
| National Association of State Aviation Officials | |
| National Cooperative Freight Research Program | |
| National Cooperative Highway Research Program | |
| National Highway Traffic Safety Administration | |
| National Transportation Safety Board | |
| Society of Automotive Engineers | |
| Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) | |
| Transit Cooperative Research Program | |
| Transportation Research Board | |
| Transportation Security Administration | |
| United States Department of Transportation | |