The first closing of tram lines occurred in 1949; on 17 January the line to Korsvoll was closed, followed on 6 February the line to Rodeløkka. The line to Rodeløkka was not removed, and a new line opened on 2 January 1955. By 1960 the plans for the T-bane were in the works, and the city council decided to terminate all tram and trolleybus lines—replacing them with rapid transit and diesel buses. The closure would not be immediate; not until the tram and trolleybus vehicles were to be retired would lines be closed. Within a year the tram lines the Kampen-, Rodeløkka- and Vestbanen Line were closed, as were the trolleybus lines 18 and 24. The remaining two trolleybus routes were closed in 1967.