 Each member of Class 33/1 and all TC stock had a small socket where the bell/beacon units plugged in to draw power from the train systems.Trains for the quay would halt at the station throat, the warning equipment attached and then tested by the train guard.In addition, trains on the tramway were "walked" by railway staff with flags, clearing the route of people and badly parked cars all the way between the points at which the tramway reverted to conventional track at the quay station and road crossing into Weymouth yard.