 In the 1940s a decision was made to replace streetcar service with trolley buses; the first trolley bus ran on November 22, 1948, starting a three-year transition period, and the last streetcar ran on November 10, 1951.With the demise of the streetcars, Saskatoon Municipal Railway was renamed Saskatoon Transit System on August 15, 1949.The trolley buses were in turn phased out and ran for the last time on May 10, 1974.