Oslo T-bane

The Oslo Metro ( or or simply ) is the rapid transit system of Oslo, Norway, operated by Sporveien T-banen on contract from the transit authority Ruter. The network consists of six lines that all run through the city centre, with a total length of , serving 100 stations of which 16 are underground or indoors. In addition to serving 14 out of the 15 boroughs of Oslo (all except St. Hanshaugen), two lines run to Bærum. In 2014, the system had an annual ridership of 88 million.