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The Toronto Transit Commission (TTC) maintains four rapid transit lines and 69 stations on 68.3 kilometres (42.4 mi) of route. Crossover tracks are used throughout the system, particularly at terminal stations to allow trains to reverse direction. ==Diamond-crossovers== Diamond-crossovers also exist outside most stations that once served as terminal stations. A single-crossover just east of Union Station is what remains of the former diamond-crossover, which was used when the station marked the southern terminus of the original line. A few crossover tracks that were built as part of the original subway system have since been removed; their locations are marked by tunnel sections where there are no central pillars between tracks. ; Yonge–University line *South of Downsview Station (used often as a terminal station) *South of Wilson Station (part of original Spadina line terminus that is still in operation) (used often in 1978–1996 as a terminal station) *North of Spadina Station *South of St. George Station (part of original University line terminus that is still in operation) (used often in 1963–1966 and 1966–1978 as a terminal station) *East of Union Station (on northbound track; formerly a double crossover, now a single crossover) (part of original south Yonge line terminus that is still in operation) (used often in 1954–1963 as a terminal station) *North of King Station, south of Queen Station *North of Dundas Station, south of College Station *North of Bloor Station *South of St. Clair Station *South of Eglinton Station (part of original north Yonge line terminus that is still in operation) (used often in 1954–1973 as a terminal station) *South of Lawrence Station *South of York Mills Station (used often in 1973–1974 as a terminal station) *South of Sheppard–Yonge Station *South of Finch Station (often used as a terminal station) ; Bloor–Danforth line *East of Kipling Station (often used as a terminal station) *East of Islington Station (used often in 1968–1980 as a terminal station) *East of Jane Station *East of Keele Station (part of original west Bloor–Danforth line terminus that is still in operation) (used often in 1966–1968 as a terminal station) *East of St. George Station *West of Woodbine Station (part of original east Bloor–Danforth line terminus that is still in operation) (used often in 1966-1968 as a terminal station) *East of Victoria Park Station (double crossover was re-installed - not yet operational) *West of Warden Station (used often in 1968–1980 as a terminal station) *West of Kennedy Station (often used as a terminal station) ; Scarborough RT line *East of Kennedy Station (on westbound track) (often used as a terminal station) *West of McCowan Station (often used as a terminal station) ; Sheppard line *East and west of Sheppard-Yonge Station (often used as a terminal station east of the station) *East of Bayview Station *West of Don Mills Station (often used as a terminal station) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Toronto rapid transit trackage」の詳細全文を読む スポンサード リンク
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