The electric tram services were originally operated by 30 four-wheeled double decked cars supplied by Dick, Kerr & Co. In 1904, six bogie cars and a water car (used for keeping down the dust on the streets) were added to the fleet, from the same manufacturer. No further trams were acquired, and a planned extension from the Caversham Road terminus across Caversham Bridge to Caversham itself was abandoned because of the outbreak of World War I. The war also led to a significant maintenance backlog.