Stadler’s InterRegio duplex trains enter service in Switzerland July 14, 2023 | Company News, Europe Company News, Europe News, News The first of the 60 InterRegio duplex trains being supplied by Stadler have entered into revenue service in Switzerland. The trains have been deployed on the Zurich–Schaffhausen route. An additional s... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password