The line was built as a suburban tramway, but has since been transformed to partially run in the streets.

[1] On 21 November 2002 the owner Oslo Sporveier closed the Kjelsås Line—replacing the tram with a feeder bus to save costs of the maintenance of the tramway.

The line was reopened on 22 November 2004 after local protests, and a compromise in the city council.

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