Current TFLEx member agencies:
- Alameda-Contra Costa Transit District (AC Transit) – Oakland, Fremont, Berkeley
- Bi-State Development Agency (METRO) – St. Louis, MO
- Central Ohio Transit Authority (COTA) – Columbus, OH
- Central Puget Sound Regional Transit Authority (ST) – Seattle, WA
- Capital Area Transit System (CATS) – Baton Rouge, LA
- Culver City Bus – Culver City, CA
- Dallas Area Rapid Transit (DART) – Dallas, TX
- Denton County Transportation Authority (DCTA) – Denton, Highland Village, Lewisville
- Denver Regional Transportation District (RTD) – Denver, CO
- Foothill Transit – West Covina, CA
- Fort Worth Transportation Authority (The T) – Fort Worth, TX
- Golden Gate Bridge, Highway and Transportation District (GGBHTD) – San Francisco, CA
- Hillsborough Area Regional Transit Authority (HART) – Tampa, FL
- Long Beach Transit (LBT) – Long Beach, CA
- Los Angeles County Metropolitan Transportation Authority (LACMTA) – Los Angeles, CA
- Metropolitan Atlanta Rapid Transit Authority (MARTA) – Atlanta, GA
- Metropolitan Transit Authority of Harris County (METRO) – Houston, TX
- Memphis Area Transit Authority (MATA) – Memphis, TN
- Orange County Transportation Authority (OCTA) – Orange, CA
- Pierce County Transportation Benefit Area Authority – Tacoma, WA
- Rochester-Genesee Regional Transportation Authority (RGRTA) – Rochester, NY
- Regional Transportation Authority (RTA) – Chicago, IL
- RTC of Southern Nevada – Las Vegas, NV
- San Diego Metropolitan Transit System (MTS) – San Diego, CA
- San Joaquin Regional Transit District (RTD) – Stockton, CA
- Texas A&M Transportation Institute (TTI) – College Station, TX
- Tri-County Metropolitan Transportation District of Oregon (TriMet) – Portland, OR
- Utah Transit Authority – Salt Lake City, UT
- Valley Metro – Phoenix, AZ
- VIA Metropolitan Transit (VIA) – San Antonio, TX
- Washington Metropolitan Area Transit Authority (WMATA) – Washington, DC
