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The Roca line is a gauge commuter rail service in the city of Buenos Aires, Argentina, part of General Roca Railway network. The service is currently operated by State-owned company Trenes Argentinos, from the city-centre terminus of Constitución south to Alejandro Korn, Cañuelas, and La Plata, and west to Sarmiento Line's station Haedo. The intermediate stations connecting the different branch lines are Avellaneda, Bosques and Temperley. The line consists of 198 kilometres of track (55 of which are electrified), 70 stations, 146 grade crossings, 907 daily services through its different branches, and carries half a million passengers daily, making it the longest and most used line of the Buenos Aires commuter rail network. Currently there are large electrification and infrastructure improvement works being undertaken on the line, with brand new electric multiple units entering service on 8 June 2015. ==History== This line had previously been run by the state-owned company Ferrocarriles Argentinos since nationalisation of the Argentine railways in 1948. Branches from Constitución to Ezeiza and Glew were electrified and the entire fleet of trains renewed, acquiring multiple units by Japanese companies Nippon Sharyo, Kinki Sharyo, Tokyu Car, Kawasaki and Hitachi. The electrified rail system was opened to public in November, 1985.〔("Los eléctricos japoneses del Roca" by Andrés J. Bilstein ) on Portal de Trenes, 20 Oct 2014〕 Ferrocarriles Argentinos operated the trains until 1991 when residual company FEMESA temporarily took over all the urban services prior to the privatisation of the network. After the Government of Carlos Menem privatised the urban railways services, the private company Metropolitano (TMR) took over Roca Line through concession. Nevertheless, non-compliance with the terms and conditions (such as lack of investment and poor maintenance of the line, in spite of the large government subsidies received by Metropolitano) led the Government of Argentina to revoke the contract of concession in 2007.〔("Kirchner le quitó la concesión de trenes a Metropolitano", La Nación, 22 May 2007 )〕 The UGOFE consortium took over the service until 12 February 2014, when it was announced that the line would be granted to the local Emepa Group.〔("Trenes: le dan a Roggio el Mitre y el San Martín y a Emepa, el Roca y el Belgrano Sur", ''La Nación'', 12 Feb 2014 )〕〔("Las privadas volverán a operar la mayoría de las líneas ferroviarias", ''Clarín, 12 Feb 2014 )〕 〔("El Gobierno estableció un nuevo régimen de operaciones de las líneas ferroviarias", Telam, 12 Feb 2014 )〕 After the concession was revoked, a temporary consortium named "UGOFE", took over the Roca line. Several projects were announced to modernize the line and improve its service, setting as a priority the electrification of the whole system. Other projects included a new maintenance yard in the town of Tolosa in La Plata Partido, several new bridges and tunnels at road crossings and improved grade crossings, all new concrete sleepers and welded rail joints for the entire line, the remodeling of 50 stations and the purchase of 200 electric coaches of the latest technology. Presently electrification of Avellaneda-Quilmes and Temperley-Bosques sections are under way. 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「Roca Line」の詳細全文を読む スポンサード リンク
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