Norwegian National Rail Administration
The Oslo Commuter Rail runs entirely on mainline railways owned and maintained by the Norwegian National Rail Administration. The commuter rail uses ten lines, utilizing a line length of . The lines are all electrified at and consists of 128 stations. The Asker, Drammen, Gardermoen and Østfold lines, and part of the Trunk Line, have double track, accounting for , while the rest of the network has single track.