Trambaix and Trambesòs Tram, Spain September 9, 2022 | Europe Project Update, Project Update Developer: Autoritat del Transport Metroplità (ATM) is the developer. Description: Development of a connection between the two tram networks, Trambaix and Trambesòs, in Barcelona. Background: The Ba... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password