 Construction began, and both routes opened on 31 August 1915, although they were physically isolated from each other.The three single-deck vehicles obtained for the opening and a few trams were stored in a new depot at Old Toll Bar, but there were only tram wires from the depot to the start of the Manvers Main route at Mexborough.The trolleybuses reached there with one trolley boom on the overhead wire and a skate running along the tram tracks to complete the circuit.