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Line 3 Scarborough, formerly and still commonly known as the Scarborough RT, is a rapid transit line on the Toronto rapid transit system in Toronto, Ontario, Canada. It is owned and operated by the Toronto Transit Commission (TTC), which refers to the line as route 3 (formerly route 603).〔Toronto Transit Commission, (Scheduled Service Summary ), Board Period Commencing Sunday, July 21, 1991〕 The line has six stations〔 and is in length situated almost entirely above ground. It connects with Line 2 Bloor–Danforth at Kennedy and terminates at McCowan via Scarborough Centre. Rather than the standard and relatively larger subway cars used by the other lines of the Toronto subway, the Scarborough line rolling stock consists of a smaller, fully automated, medium-capacity rail transport system using Intermediate Capacity Transit System Mark I vehicles built by the Urban Transportation Development Corporation (UTDC) and powered by linear induction motors, identical to vehicles used by the Vancouver SkyTrain and the Detroit People Mover. The line uses standard gauge tracks, unlike the rest of the Toronto subway and the Toronto streetcar system which use a unique, wider gauge. The line has been virtually unchanged since its opening in 1985 and has two of the least used stations in the system. Its revitalization and expansion plan, whether to convert the line into using modern light rail vehicles or to close the line and extend Line 2 Bloor–Danforth further into Scarborough, has been debated for over a decade by the municipal government of Toronto. In September 2013, the Government of Ontario, under Premier Kathleen Wynne, announced it would fund the extension of Line 2 to Scarborough Centre, which will result in the eventual closure of the Scarborough line. However this has been cancelled for a new three-stop "Scarborough Subway" line, which goes on a different route than the Line 3 Scarborough.〔http://www.thestar.com/news/gta/2013/10/08/scarborough_subway_confirmed_by_toronto_council.html〕 ==History== In 1972, the provincial government announced the GO-Urban plan to build an intermediate capacity transit system across suburban Toronto using the experimental Krauss-Maffei Transurban.〔"GO-Urban's bright future fades suddenly", ''Toronto Star'', 14 November 1974〕 The system failed to come to fruition, and the TTC began building the line for CLRV streetcars, but the ICTS system was used instead, because the Province of Ontario agreed to pay a large portion of the costs. This change was made after construction had commenced. At Kennedy Station, there are clues revealing that it was originally built for streetcar operation; it is possible to see old low-level streetcar platforms protruding under the current high-level platforms, and Kennedy Station used to have an operational loop to turn streetcars. This proved too sharp for safe operation of the cars, which did not have a reason to turn around, and the loop was replaced by a Spanish solution-like crossover.〔(Transit Toronto - Why was the Kennedy RT station renovated so soon after it was built? )〕 Ontario wanted to develop and promote its new technology, which had been designed for a proposed urban GO Transit service known as GO-ALRT. Changes to federal railway regulations had made the new system unnecessary for GO, and so the government hoped to sell it to other transit services in order to recoup its investment. The Scarborough line opened in March 1985 as the Scarborough RT. Three years after it opened, the TTC renovated its southwestern terminus at Kennedy Station, because the looped turnaround track, designed for uni-directional streetcars under the earlier plan and not needed for the bi-directional ICTS trains, was causing derailments; it was replaced with a single terminal track and the station was thus quasi-Spanish solution, with one side for boarding and another side for alighting, though the boarding side is also used for alighting during off-peak hours and weekends. From when the line opened in 1985 until 2015 it was known as the "Scarborough RT" or "SRT". The "RT" in Scarborough RT stood for "rapid transit". Locals have often referred to the line as ''SRT'' or ''the RT'' for short.〔(TTC Subway/RT )〕 The name Scarborough Line is used on the official TTC website and 2014 TTC Ride Guide.〔http://ttc.ca/PDF/Maps/SubwayRT_Map_2014.pdf〕〔http://ttc.ca/Subway/index.jsp〕 In October 2013, the TTC announced plans to give the lines official numbers to help riders and visitors to navigate the system. The line is numbered as Line 3, as it is the third rapid transit line to open in the system. New signage was installed in March 2014, and it is expected that it will be rolled out to all TTC rapid transit stations.〔(TTC considers numbering subway lines | CityNews )〕〔(TTC tests new numerical signage system | CTV Toronto News )〕 In 2015, the name was simplified to "Line 3 Scarborough" and the trains are being repainted to a new blue finish displaying the number 3, a diagram of the Scarborough line, and the TTC logo only, thereby removing the "RT" logo. With the line approaching the end of its useful life, the TTC reduced the frequency of service effective mid-September 2012. In 2015, the TTC started work on the cars to keep them operational until the line is replaced by another mode of rail technology. This includes a new outer livery that is almost entirely blue to emphasize the line's colour code, followed by interior upgrades.〔(【引用サイトリンク】 url=http://www.blogto.com/city/2015/03/this_is_what_the_ttcs_revamped_srt_cars_look_like/ )〕 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「Line 3 Scarborough」の詳細全文を読む スポンサード リンク
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