London Underground 1992 Stock & City line, which until 1994 was part of the national railway network, and became their Class 482. When this line passed to London Underground at the start of the process to privatise British Rail on 1 April 1994, these units also passed to London Underground. The vehicles are essentially identical to those used on the Central line; the main difference being that trip-cocks are used for protection instead of ATO/ATP. Transport for London and Metronet closed the Waterloo & City line for five months from April to September 2006 to allow major upgrade work on the tunnels and rolling
History of the London Underground the mainline railways was given priority over the maintenance of the Underground. In 1953 an unpainted aluminium train entered service on the District line, and this became the standard for new trains. In the early 1960s the Metropolitan line was electrified as far as Amersham, and steam locomotives no longer hauled passenger trains. The Victoria line, a new tube line across central London, opened in 1968–71 with trains driven automatically. In 1976 the isolated Northern City Line was taken over by British Rail and linked up with the mainline railway at Finsbury Park. In 1979 another new route, the Jubilee