- All Aboard Washington
- American Public Transportation Association
- American Short Line and Regional Railroad Association
- Association of American Railroads
- Amtrak
- Bureau of Transportation Statistics
- Citizens of Modern Transit
- ConnectOregon (ODOT)
- Federal Railroad Administration
- Federal Transit Administration
- Green Jobs Through Freight Rail Expansion (pdf)
- Idaho State Rail Plan – Idaho Transportation Department
- National Association of Railroad Passengers
- ODOT Public Transportation
- Operation Lifesaver, Inc.
- Rail Passenger Association of California/Nevada
- The American Association of State Highway and Transportation Officials
- The California Department of Transportation Division of Rail
- Train Riders Association of California
- Transport 2000 BC
- U.S. Department of Transportation
- Washington State Department of Transportation Rail Division