Rural Transit Agencies
- Delta Human Resource Agency (DHRA)
- East Tennessee Human Resource Agency (ETHRA)
- First Tennessee Human Resource Agency (FTHRA)
- Hancock County Rural Public Transportation (HCRPT)
- Mid-Cumberland Human Resource Agency (MCHRA)
- Northwest Tennessee Human Resource Agency (NWTHRA)
- South Central Tennessee Development District (SCTDD)
- Southeast Tennessee Human Resource Agency (SETHRA)
- Southwest Human Resource Agency (SWHRA)
- Upper Cumberland Human Resource Agency (UCHRA)
Urban Transit Agencies
- Bristol, Tennessee Transit System (BTTS)
- Chattanooga Area Regional Transportation Authority (CARTA)
- Clarksville Transit System (CTS)
- Cleveland Urban Area Transit System (CUATS)
- Franklin Transit Authority (FTA)
- Gatlinburg Mass Transit System (GMT)
- Jackson Transit Authority (JTA)
- Johnson City Transit System (JCTS)
- Kingsport Area Transit System (KATS)
- Knoxville Area Transit (KAT)
- Memphis Area Transit Authority (MATA)
- City of Morristown (LAMPTO)
- Nashville Metropolitan Transit Authority (MTA) and Regional Transportation Authority (RTA)
- Murfreesboro Rover
- Pigeon Forge/Sevierville Fun Time Trolleys
Associate Members
- American Heart Association
- American Seating
- Crosslin & Associates, P.C.
- International Bus Group
- Knox County CAC Transit
- Logisticare Solutions, LLC
- Shepard Bros., Inc.
- Sprouse Insurance Group, LLC
- Tennessee Association of Human Resource Agencies
- Tennessee Chamber of Commerce & Industry
- Tennessee Public Health Association
- Trapeze Group
- Transit Alliance of Middle Tennessee
- Apollo Video Technology
- InShuttle Transportation, Inc.
- Chappell, Smith & Associates, Inc.