From 1954 onwards, a shift took place in the public transit plans of West-Berlin. From that moment, planning aimed at discontinuing the tram service and replacing it with extended underground and bus lines. The tramway system was considered old-fashioned and unnecessary since Berlin already had a well-developed underground network. From 1954 to 1962 numerous tram lines were replaced with bus routes and extended underground lines and stops. By 1962, the western part of the city had only 18 tram lines left out of the original 36.