All Aboard Washington

AORTA (The Association of Oregon Rail and Transit Advocates)

APTA - American Public Transportation Association

Arizona Rail Passenger Association

Bay Rail Alliance

Delaware Valley Association of Rail Passengers

ESPA, the Empire State Passengers Association

Friends of Amtrak

High Speed Ground Transportation Association

Iowa Association of Railroad Passengers

Michigan Association of Railroad Passengers

Modern Transit Society, Inc.

National Association of Railroad Passengers

National Corridors

New Jersey Association of Railroad Passengers

Operation Lifesaver

RailPAC of California

Texas Rail Advocates

Train Riders' Association of California

Transportation Choices

WashARP - Washington Association of Rail Passengers

Wisconsin Association of Rail Passengers

All Aboard OHIO

Amtrak

Amtrak Cascades

California High Speed Rail Authority

FRA – Federal Railroad Agency

Oregon Department of Transportation Rail

Sound Transit

UNIFE – European Rail Agency

Washington State Department of Transportation Rail and Marine Office

Trains Board

Trains.com

Mass Transit Magazine

Trains Magazine

Trans Dominion Express