- Amtrak
- American Public Transportation Association
- Bay Area Rapid Transit District
- Bombardier
- Capital Metro
- Delaware Department of Transportation
- Denver Regional Transportation District
- Fortress Investment Group
- London Underground
- Los Angeles County Metro. Transportation Authority
- Maryland Department of Transportation
- Maryland Port Authority
- Maryland Stadium Authority
- Mass Bay Transit Authority
- Metro. Atlanta Rapid Transit Authority
- MTA Long Island Railroad
- New York City Transit Authority
- OMI Shipping
- Omnitrans
- Southeastern PA Transportation Authority
- Tampa Port Authority
- Washington Metro. Area Transit Authority