Wikipedia
Akersbanerne
A/S Akersbanerne was a municipal owned company that operated tramways in the former Municipality of Aker in current Oslo, Norway. The company was established in 1917, and opened the suburban Østensjø Line tramway in 1926; it took over the majority ownership of Holmenkolbanen in 1933, that owned the Holmenkoll Line, Sognsvann Line and the Røa Line. Akersbanerne merged with Oslo Sporveier in 1949, following the merger of the municipalities.