A running list of APTA Members support letters is below:
- California Transit Association
- Commuter Railroads CEOs
- Golden Gate Bridge
- GILLIG
- Large Transit System Agencies
- Lextran
- Massachusetts Bay Transportation Authority
- North American Transit Alliance
- North County Transit District
- Rio Metro
- Small and Mid-Size Transit System Agencies
- United Safety and Survivability Corporation
- Virginia Transit Association
