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|} The is a railway line in Japan operated by East Japan Railway Company (JR East). It begins at Nippori Station in Taitō, Tokyo and follows the Pacific coasts of Chiba, Ibaraki, and Fukushima Prefectures before the line officially ends at Iwanuma Station in Iwanuma, Miyagi. However, most trains originate at rather than Nippori; likewise, many trains continue past Iwanuma onto the Tōhoku Main Line tracks to . The name "Jōban" is derived from the names of the former provinces of Hitachi (常陸) and Iwaki (磐城), which the line connects to Tokyo. , two segments of the Joban Line are closed in the wake of the 2011 Tōhoku earthquake and tsunami and Fukushima Daiichi nuclear disaster. The segment between Tatsuta and Haranomachi, which runs through the exclusion zone surrounding the Fukushima Daiichi nuclear meltdown, is closed indefinitely, while the segment between Hamayoshida and Sōma is under reconstruction and served by an interim bus service.〔JR East press release: http://www.jrmito.com/press/111214/20111214_press03.pdf〕〔Hongo, Jun, "(A year on, Tohoku stuck in limbo )", ''The Japan Times'', 11 March 2012, p. 1.〕〔http://www.jrmito.com/eq/index.html〕 JR East is currently inspecting the segments between Hirono and Tomioka and between Namie and Haranomachi in preparation for the surrounding areas being cleared for re-settlement,〔http://www.jreast.co.jp/pdf/damage03.pdf〕 and plans to reconstruct the track and stations between Hamayoshida and Komagamine in new positions located farther inland, targeting completion by 2017.〔http://www.jrmito.com/press/120927/20120927_press.pdf〕 As of January 31, 2015, sections between Tatsuta and Haranomachi are replaced by a bus service. As of March 14, the line has been extended to Tokyo Station via the Ueno-Tokyo Line. ==Basic data== *Operators, distances: * *East Japan Railway Company (JR East) (Services and tracks) * * *Nippori – Haranomachi – Iwanuma: * * *Mikawashima – Sumidagawa – Minami-Senju (Sumidagawa freight branch): * * *Mikawashima – Tabata (Tabata freight branch): * *Japan Freight Railway Company (JR Freight) (Services) * * *Mikawashima – Haranomachi – Iwanuma: * * *Mikawashima – Sumidagawa – Minami-Senju (Sumidagawa freight branch): * * *Mikawashima – Tabata (Tabata freight branch): *Double/quadruple tracking: * *Quadruple: Ayase – Toride * *Double: Nippori – Ayase, Toride – Yotsukura, Hirono – Kido, Ōno – Futaba *Electrification: * *1,500 V DC: Nippori – Toride, Mikawashima – Sumidagawa – Minami-Senju, Mikawashima – Tabata * *20 kV AC, 50 Hz: Fujishiro – Iwanuma. This section of the line, along with a nearby section of the Tsukuba Express, uses alternating current in order to minimize interference with the nearby Kakioka Magnetic Observatory in Ishioka. * *The dead section is located between Toride and Fujishiro *Railway signalling: * *Automatic Train Control (ATC): Ayase – Toride * *Automatic Signaling Block for all other sections *operation control * *ATOS: Ueno – Hatori, local train track Ayase – Toride * *CTC: All other sections 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「Jōban Line」の詳細全文を読む スポンサード リンク
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