TMB Barcelona commences trials on UNVI double-decker electric bus, Spain March 29, 2025 | Europe News, News Transports Metropolitans de Barcelona (TMB Barcelona) has commenced trials on a double-decker electric bus supplied by UNVI. A total of 18 such double-decker buses will be supplied by the end of 2025.... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password