Transportation Authorities & Operators
- Alaska Railroad Corporation (ARRC), Anchorage, Alaska, USA
- Amtrak, Washington, D.C., USA
- Anacostia Pacific, New York City, New York, USA
- Bay Area Rapid Transit (BART), Oakland, California, USA
- Bolivian Railways, La Paz, Bolivia
- Bulgarian Railways, Sofia, Bulgaria
- Caltrans, Sacramento, California, USA
- Concepcion Mass Transit, Concepcion, Chile
- Czech Republic Railway, Prague, Czech Republic
- Doosan Metro, Seoul, South Korea
- Florida DOT, Tallahassee, Florida, USA
- Fort Worth Transportation Authority - Trinity Railway Express, Dallas, Texas, USA
- Georgia Rail Passenger Authority, Atlanta, Georgia, USA
- Illinois DOT, Chicago, Illinois, USA
- Kaoshung Metro, Taipei, Taiwan
- Korean National Railways (KNR), Seoul, Korea
- Malaysian National Railway, Kuala Lumpur, Malaysia
- Maracaibo Metro, Maracaibo, Venezuela
- Mass Transit System, Jakarta, Indonesia
- Massachusetts Bay Transportation Authority (MBTA), Boston, Massachusetts, USA
- Maryland Transit Administration (MTA), Baltimore, Maryland, USA
- METRA, Chicago, Illinois, USA
- Metropolitano, Buenos Aires, Argentina
- Miami-Dade Transit Authority (MDTA), Miami, Florida, USA
- Michigan DOT, Detroit, Michigan, USA
- Metro Washington Airport Authority (MWAA), Washington, D.C., USA
- Nashville MTA, Nashville, Tennessee, USA
- New Jersey Transit (NJT), Newark, New Jersey, USA
- Niagara Frontier Transportation Authority (NFTA), Buffalo, New York, USA
- Nuevo Central, Buenos Aires, Argentina
- Panama Railway, Panama City, Panama
- Peninsula Corridor Joint Powers Board (Caltran), San Carlos, California, USA
- Philippine National Railway, Manila, Philippines
- Puget Sound Regional Transit Authority (Sound Transit), Seattle, Washington, USA
- Rio de Janeiro Commuter Rail, Rio de Janeiro, Brazil
- Rio de Janeiro Metro, Rio de Janeiro, Brazil
- Regional Transportaton Authority (RTA), Chicago, Illinois, USA
- San Francisco Municipal Transit Agency (SFMTA), San Francisco, California, USA
- San Joaquin RTA, San Jose, California, USA
- Santiago Commuter Rail, Santiago, Chile
- Sao Paulo CPTM, Sao Paulo, Brazil
- Sao Paulo Metro, Sao Paulo, Brazil
- Seoul Metro, Seoul, Korea
- SCRRA, Los Angeles, California, USA
- Sonoma-Marin Area Rail Transit (SMART), San Rafael, California, USA
- Taipei Metro, Taipei, Taiwan
- Taiwan High Speed Rail, Taipei, Taiwan
- Thailand Metro & Freight Rail, Bangkok, Thailand
- Tijuana LRV & Mexico City Metro, Mexico
- University of Michigan, Lansing, Michigan, USA
- Via Rail Canada, Montreal, Canada
- Virginia Dept of Rail and Public Transportation, Richmond, Virginia,
USA
- Wisconsin DOT, Madison, Milwaukee, USA
- Washington Metropolitan Area Transit Authority (WMATA), Washington, D.C., USA