The members of the International Bus Benchmarking Group are:
- Transport Metropolitans de Barcelona (TMB, Barcelona),
- Société des Transports Intercommunaux de Bruxelles (STIB/MIVB, Brussels),
- Dublin Bus (Dublin),
- IETT Isletmeleri Genel Müdürlügü (IETT, Istanbul),
- Rapid Bus Sdn Bhd (RapidKl, Kuala Lumpur)
- Companhia Carris de Ferro de Lisboa (Carris, Lisbon),
- London Buses (LBSL, London),
- Societe de Transport de Montréal (STM, Montréal),
- Mosgortrans (Moscow),
- MTA – New York City Transit (NYCT) & MTA Bus (New York),
- Régie Autonome des Transports Parisiens (RATP, Paris),
- King County Metro Transit (King County Metro, Seattle),
- Singapore Mass Rapid Transit (SMRT Buses, Singapore),
- Sydney Buses (Sydney),
- Coast Mountain Bus Company (CMBC, Vancouver).
