Rennes Metro, Brittany region, France May 1, 2021 | Europe Project Update Key players: Rennes Métropole and Société d'Économie Mixte des Transports de l'Agglomération Rennaise (SEMTCAR) are the developers. SEMTCAR is owned by Transdev and Rennes Métropole. Keolis Rennes, ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password