Drammen Line
The Drammenbane (German Drammenbahn, originally Christiania Drammen railway ) is a railway line in Norway, which connects the cities of Oslo and Drammen. It was built following a decision by the Norwegian Parliament on June 16, 1869, opened on October 7, 1872.
Askerbanen
A parallel 9.7 km long new line, Askerbanen between Sandvika and Asker, was opened in 2005. A 6 km long extension between Lysaker and Sandvika was opened in 2011.
Lieråsen tunnel
The 10.7 km long Lieråsen tunnel was opened in 1973.