Cardiff Bus () is the dominant operator of bus services in Cardiff, Wales and the surrounding area, including Barry and Penarth. The company is wholly owned by Cardiff Council and is one of the few municipal bus companies to remain in council ownership. History While horse buses (and later horse trams) had run in the city since 1845, Cardiff Bus can trace its history back to May 1902, when Cardiff Council took over and electrified a tram line between Roath and the city centre. It had been previously run by the Cardiff Tramway Company. The resultant Cardiff Corporation Tramways spent the next three decades extending its electric tram network, and at its peak in 1927 ran 141 electric trams over 18 miles of line. On Christmas Eve 1920, the corporation introduced its first bus, although the first motor bus route was operated by the Tramway Company from 1907. The first Cardiff trolleybuses were introduced in 1942, their introduction having been delayed by the outbreak of World War II. The intention was to convert the remaining tramway system to trolleybus operation, then to extend the network. While the first stage was completed in 1950, the only extension made to the system was to Ely which took place in 1955. Although powers had been obtained to considerably expand the network, a policy U-turn occurred in 1961 when the decision was made to replace all the trolleybuses with motor buses. This task was completed in 1970, bringing to an end 68 years of electric traction on the streets of Cardiff. The Transport Act of 1985 deregulated bus services outside London and required all Local Authorities to establish private "arm's length" bus companies. In October 1986 the council established a subsidiary company. In 1992, the closure of the National Welsh bus company led Cardiff Bus to extend and intensify its network in the areas and towns surrounding Cardiff, including Barry, the Vale of Glamorgan and Caerphilly. The Caerphilly local network of services including links between Cardiff, Caerphilly, Blackwood and Tredegar were discontinued in 2001 and are now provided by Stagecoach in South Wales. Some loss-making services have been withdrawn and are now operated under local authority tender by other operators, including Watts Coaches and NAT Group. From September 2016, four of Cardiff Bus' services (routes 51/53, 86 and X91) were transferred to its new Capital Links sister brand, with a further four services transferring