Sporveien completes Oslo Metro Kolsåsbane project August 26, 2015 | Europe News Sporveien T-banen, the owner of Oslo Metro in Norway, has completed the 10-year Kolsåsbane project, with the construction of the Avløs depot on Line 2. The project also involved infrastru... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password