In the interwar period, the extension of the Røa Line to Øverland was considered; the line would be constructed via Østerås to Øverland, continuing from there to Lommedalen in northwestern Bærum.
The extension of the Røa Line to Øverland was considered. This was in the interwar period. The line would be constructed via Østerås to Øverland. The line was continuing from there to Lommedalen in northwestern Bærum.