Work begins on Paris Tramway Line T4 extension October 19, 2016 | Europe News Syndicat des Transports d'Île-de-France (STIF) has begun work on the extension of Paris Tramway Line T4 to Montfermeil Hôpital. The project involves construction of a 6.5-km tram-train branch line con... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password