includes 146 cars of the types T1 through T4, that have third-rail only operation, and thus did not run on the Holmenkollen and Kolsås lines. These ran usually in units of three or six (sometimes four or five) cars. Types T5 to T8, 49 in total, delivered with both third-rail and overhead wire equipment, normally ran on the Holmenkollen line (two cars) and Kolsås line (three cars). When the Holmenkollen Line was connected to the T-bane it was still using old teak cars; to allow through services the T2000, capable of dual-system running, was delivered in 1993. They were not particularly successful and only 12 units were delivered, operating in pairs on the Holmenkollen line sometimes connecting with the Lambertseter line, and scrapped in 2010. Depots and facilities Avløs Depot – located near Avløs station on the Kolsås Line, it has been closed for refurbishment since 2011 and reopened in August 2015. Etterstad Depot – located on the shared section of the Østensjø Line, Furuset Line and the Lambertseter Line before Brynseng station, it is used as the main operations centre for the Oslo Metro and has a yard for maintenance of way equipment. Majorstuen Depot – a small yard used mainly for storing trains, located close to the Oslo Tramway Museum and Majorstuen station. Ryen Depot – the main storage and maintenance yard for all Oslo Metro trains, located on the Lambertseter Line near Ryen station. Network Map See also Oslo Tramway Timeline of transport in Oslo List of metro systems References Inline references Bibliography External links Sporveien T-banen Ruter Underground rapid transit in Norway Rapid transit in Norway 1966 establishments in Norway 750 V DC railway electrification Railway lines opened in 1966