Oslo Metrorail Project (T-bane), Norway March 1, 2014 | Europe Project Update Developer: Ruter AS Project description: Expansion of the 84.2-km long metro system in Oslo city. Background: The Oslo metro, known as the Tunnelbana or T-bane, serves 14 out of the 15 borough... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password