American Farmland Trust
American Planning Association
American Public Transportation Association
American Public Works Association
Alliance for the New Transportation Charter
Americans for Transportation Mobility
Austin Monorail Project
Baltimore-Washington Maglev Project
Bay Area Monorail Committee
BayRail Alliance
Better Commute
California Futures Network
California Maglev
California Maglev Orangeline Homepage
California-Nevada Maglev Project
California Transit
CalTrain
Car Busters
Car Free
Cascade Bicycle Club
Center for Transportation Excellence
Citizens for King County Monorail
The City Repair Project
Coalition for Clean Air
Coalition for Effective Transportation Alternatives
Committee for Green Foothills
The Commons
Community & Environmental Defense Services
Culture Change
Dave's Electric Railroads
Defenders of Wildlife
EcoIQ
Embrace Open Space
Environment California
Environmental Protection Agency
Freeway Monorail
Friends of the Earth
Friends of the Monorail
Friends of Transit
Future City Competition
Greenbelt Alliance
Habitat Works
HELIO International
High-Speed Monorail
ICLEI - Local Governments for Sustainability
Innovative Transportation Technologies
Institute for Transportation and Development Policy (ITDP)
Intelligent Transportation Society of America
Intercity Transit
International Bicycle Fund
James Howard Kunstler
Jane Holtz Kay
Kentuckians for Better Transportation
Light Rail Central
Light Rail Transit Association
MAGLEV, Inc.
MegaRail Transportation Systems, Inc.
The Monorail Society
The New Colonist
Orlando Monorail
The Rail Passenger Association of California and Nevada
Seattle Monorail Project
Transrapid International - Magnetic Levitation Train