 After the war in 1946 Oslo Sporveier announced they would electrify three more bus lines; on 6 February 1949 ring line 20—from Majorstuen via Sagene and Carl Berners Plass to Galgeberg—and line 23, later renumbered 18, from Bjølsen to Lian Street, and expanded to Ekeberg Hageby on 11 June 1950.The last trolleybus route was line 24 converted on 20 May 1955 from Tåsen to the Eastern Railway Station.In total 72 trolleybuses, all built by Strømmen, were delivered.