RATP begins trial runs on Paris tram route T8 November 24, 2014 | Europe News Régie Autonome des Transports Parisiens (RATP) has begun trial runs on tram route T8 in Paris. Commercial service is expected to begin on December 16, 2014, with a fleet of 20 five-section Alstom Cita... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password