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The Grorud Line ((ノルウェー語:Grorudbanen)) is a line on the Oslo Metro between Tøyen and Vestli in Oslo, Norway. Built as a mix of underground, at ground level and as an elevated line, it runs through the northern part of Groruddalen, serving such neighborhoods as Grorud, Romsås and Stovner. Line 5 runs along the line eight times per hour. The westernmost part of the line, from Tøyen to Carl Berners plass, is also used by Line 6, which continues along the Ring Line. The two will be connected via the Løren Line when construction concludes. With 40,000 daily riders, the Grorud Line is the busiest branch of the metro. Proposals for an urban railway through the upper parts of Groruddalen were first articulated in public documents in 1919. Planning started in the late 1940s and the line was politically approved in 1954, along with three other metro lines and the Common Tunnel. Construction started in 1956 and was part of a process to transform Groruddalen into a residential area. The first part of the Grorud Line, from Tøyen to Grorud, was opened on 16 October 1966. The rest of the line opened in three stages: to Rommen on 3 March 1974, to Stovner on 18 August and to Vestli on 21 December 1975. The Ring Line connection opened on 22 August 2006 and since 2013 the Løren Line has been under construction. ==Route== The Grorud Line is a and runs through the northern side of Groruddalen in Oslo. Through the lower section of the line it passes through a mixed residential and commercial area. The Grorud Line branches from the Common Tunnel at Tøyen and continues in a tunnel to Carl Berners plass. At this point there is also a direct, single-track tunnel which allows non-revenue trains access to Ryen Depot. North of Carl Berners plass the Ring Line branches off from the Grorud Line. The latter continues in an S-curve to the neighborhood of Hasle, where it leaves the tunnel and reaches Hasle Station. It continues through a short tunnel under the Alna Line and Ring 3 before reaching Økern Station. Along this section the Løren Line will connect to the Grorud Line. The line continues past Risløkka Station parallel to Østre Aker vei. It continues past Vollebekk Station and Linderud, after which the character of the area changes to residential. The line crosses over to run parallel with National Road 4 from Veitvet Station. The line crosses under National Road 4 and continues past Rødtvet Station and Kalbakken Station. The line then enters a tunnel which it leaves before reaching Ammerud Station. Next the line reaches Grorud Station and immediately afterwards enters a tunnel. Romsås Station is located within the tunnel, which ends just before reaching Rommen Station. The line continues at ground level until just before Stovner Station, at which time it enters a tunnel. The line continues in this tunnel until reaching the terminus of Vestli 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「Grorud Line」の詳細全文を読む スポンサード リンク
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