IDFM to deploy high-level electric bus service in Essonne by 2024, France January 16, 2023 | Europe News, News Île-de-France Mobilités (IDFM) has announced plans to convert bus line 402 in Essonne to a high-level electric bus service, T Zen 4, by 2024. The 14-km line will connect Viry-Châtillon to Corbeil-Ess... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password