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The Siemens-Schuckert Orenstein & Koppel (normally abbreviated to Siemens O&K) is an underground car used on the Buenos Aires Underground first built by Siemens-Schuckert and Orenstein & Koppel in 1934, 1937 and 1944. The Siemens O&K rolling stock made up the entirety of the trains used on the three lines built by the Hispanic-Argentine Company for Public Works and Finances (CHADOPyF) and has since served on every line of the Underground (with the exception of Line B, which uses third rail electrification) from 1934 to the present day in both its original form and as cars refurbished by the Emepa Group and Alstom.〔 As such, it has been the most widely-used rolling stock in the Underground's history, and second only to the Brugeoise cars in the amount of years served, being the oldest cars still in circulation. The original cars are set to retire in 2015, while refurbished models may continue to operate on the network. ==History== The first Siemens-Schuckert Orenstein & Koppel cars were purchased in 1933 by the Hispanic-Argentine Company for Public Works and Finances (CHADOPyF) for the first line constructed by the company in the city, Line C (then known as Line 1, though it was the third to be built in the city), which was opened in 1934. The Siemens O&K rolling stock made up the entirety of the line until 2007, when Japanese Nagoya trains were transferred from Line D and the Siemens cars were all sent to the newly-inaugurated Line H, with newer Nagoya trains also arriving in the country for Line C in 2014.〔(Línea C ) - Buenos Aires Ciudad.〕〔(La línea C cumple 80 años ) - EnElSubte, 8 November 2014.〕〔(Se embarcan en Japón últimas dos formaciones Nagoya ) - EnElSubte, 18 May 2015.〕 When Line D was completed by CHADOPyF in 1937, the line was similarly served by Siemens O&K cars in its entirety, though these were replaced in 1999 by Nagoya trains and later by Alstom Metropolis trains in 2004. In 1944, Line E was the last of the CHADOPyF lines to be opened and was equally inaugurated with new Siemens O&K rolling stock ordered from Germany. With the three lines operating the same rolling stock during this time, it was the most standardised period in terms of rolling stock in the history of the Buenos Aires Underground. The three lines remained uniform until 1968, when CAF-GEE rolling stock was purchased to bolster numbers in Lines D and E, though these cars shared a similar design and technical specifications to the Siemens cars.〔(Línea E: 70 años buscando pasajeros ) - EnElSubte, 20 June 2014.〕〔(Ferrofilatelia ) - EnElSubte, 6 June 2010.〕〔(Línea D ) - Buenos Aires Ciudad.〕〔(Línea E ) - Buenos Aires Ciudad.〕 A Siemens O&K train was used as the fictitious missing "UM-86" train in the 1996 Argentine science fiction film Moebius. Other trains of the same type are also shown in the film. 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「Siemens-Schuckert Orenstein & Koppel」の詳細全文を読む スポンサード リンク
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