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. In 1919, Reading Corporation started operating its first motor buses. These ran from Caversham Heights to Tilehurst, running over the tram lines and beyond the tram termini. Because of the state of the track, the Bath Road tram route was abandoned in 1930, followed by the Erleigh Road route in 1932. Eventually it was decided that the tramways should be abandoned and replaced by trolleybuses, operating over extended routes. The last tram ran on the Caversham Road to Whitley route in July 1936, and the last car on the main line ran in May 1939. Trolleybus era The first trolleybus wiring erected was a training loop on Erleigh Road, which opened in early 1936. This loop was never used in public service, and was subsequently dismantled. Public service commenced on 18 July 1936, on a route replacing the tram route from Caversham Road to Whitley Street. In May 1939, the remaining tram routes from Oxford Road to Wokingham Road and London Road were converted to trolleybus operation, with a short extension from Wokingham Road to the Three Tuns, and a much longer extension from the Oxford Road through the centre of Tilehurst to the Bear Inn. The extended main line, from the Three Tuns to the Bear, still exists today as bus route 17, the town's busiest and most frequent route, and the first to be designated a premier route. During World War II a trolleybus branch was constructed from the Oxford Road to Kentwood Hill, enabling trolleybuses to replace motor buses with a consequential saving in precious oil-based fuel. In 1949 the Whitley Street line was extended to Whitley Wood and Northumberland Avenue, and a short branch was built to Reading General station. Subsequent short extensions took the system to its full extent, with the Kentwood route running to Armour Hill and the Northumberland Avenue line running to the junction with Whitley Wood Road. By 1965, most UK trolleybus systems had closed, and the manufacturers of the overhead equipment gave notice that they would cease production. At the same time the trolleybuses were criticised in the local press because they cost more to operate than motor buses and were inflexible, even though the