| Organization | Seats | Voting/Non-Voting |
|---|---|---|
| American Association of Private Railroad Car Owners (AAPRCO) | 1 | Voting |
| American Association of State Highway & Transportation Officials (AASHTO) | 1 | Voting |
| American Public Transportation Association (APTA) | 2 | Voting |
| American Short Line & Regional Railroad Association (ASLRRA) | 3 | Voting |
| American Train Dispatchers Association | 1 | Voting |
| Association of American Railroads (AAR) | 12 | Voting |
| Association of Railway Museums (ARM) | 1 | Voting |
| Association of State Rail Safety Managers | 1 | Voting |
| Brotherhood of Locomotive Engineers and Trainmen (BLET) | 3 | Voting |
| Brotherhood of Maintenance of Way Employes Division (BMWED) | 2 | Voting |
| Brotherhood of Railroad Signalmen (BRS) | 2 | Voting |
| Federal Transit Administration | 1 | Non-Voting |
| High Speed Ground Transportation Association | 1 | Voting |
| International Association of Machinists & Aerospace Workers | 1 | Voting |
| International Brotherhood of Elecrical Workers (IBEW) | 1 | Voting |
| Labor Council for Latin American Advancement | 1 | Non-Voting |
| League of Railway Industry Women | 1 | Non-Voting |
| National Association of Railroad Passengers (NARP) | 1 | Voting |
| National Association of Railway Business Women | 1 | Non-Voting |
| National Conference of Firemen & Oilers | 1 | Voting |
| National Railroad Construction & Maintenance Association | 1 | Voting |
| National Railroad Passenger Corporation (AMTRAK) | 1 | Voting |
| National Transportation Safety Board (NTSB) | 1 | Non-Voting |
| Railway Supply Institute (RSI) | 1 | Voting |
| Safe Travel America | 1 | Voting |
| Secretaria de Communicaciones y Transporte (Mexico) | 1 | Non-Voting |
| Sheet Metal Workers International Association | 1 | Voting |
| Tourist Railway Association Inc. | 1 | Voting |
| Transport Canada | 1 | Non-Voting |
| Transport Workers Union of America (TWU) | 2 | Voting |
| Transportation Communications International Union/BRC | 3 | Voting |
| United Transportation Union (UTU) | 3 | Voting |