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OS MX3000 : ウィキペディア英語版
OS MX3000

MX3000 is an electric train used on Oslo Metro in Oslo, Norway. The multiple units are produced by Siemens, who started serial delivery in 2007. Seventy-eight three-car units have been ordered by Kollektivtransportproduksjon, and five by Akershus County Municipality. They replaced the older T1000 and T1300 stock that was used on the Oslo Metro since 1966. By 2010, the last T1000 and T1300 trains have been retired and replaced by 83 three-car units. 32 additional sets were ordered, and the final train set was delivered in 2014, increasing the fleet to 115 units.
The trains are built as units of three cars, though they are often operated as double units. Empty 12 wagons (four unit) trains are seen every night, going from the main service area at Ryen to Stortinget metro station, where they are ready to be decoupled into shorter trains for the next day. The units are long, and weigh empty. They have a power output of , allowing speeds of . Seated capacity is 138 seats, and total capacity is 493 passengers. New features for the Oslo Metro introduced with the MX3000 include air conditioning (only in the driver's cab), air suspension, regenerative brakes and batteries for operating at the depot. The first series of 33 units were ordered in 2003, followed by an additional order for 30 in 2005, 15 in 2008, and 32 in December 2010.〔(【引用サイトリンク】accessdate=24 December 2010 )〕 The trains have been financed by Oslo Package 2, and each unit costs about .
==History==

In 1966, the Oslo Metro opened as an upgrade of two existing suburban tramways, the Østensjø- and Lambertseter Lines. By 1970, the system was supplemented by the Grorud- and Furuset Lines. They only operated to the eastern suburbs.〔Aspenberg, 1994: 29–30〕 In 1987, the system was expanded to connect to the western network, that remained a suburban tramway with overhead wires, two-car platforms and an inferior signaling system. In 1993, the Sognsvann Line was converted to metro standard, with the Røa Line following two years later.〔Aspenberg, 1994: 62〕 When the order for the MX3000 trains was placed, the Kolsås- and Holmenkoll Lines still used overhead wires, and would not be able to use the new stock. Both systems were at the time being considered for conversion to light rail systems, that would connect to the Lilleaker- and Ullevål Hageby Line, respectively.
The old fleet of T1000 and T1300 consisted of 195 cars in eight series. The T1000 was the original series delivered between 1966 and 1978, while the T1300 was a later adoption built until 1987. The T1000 series has only a third rail shoe, while the T1300 also has a pantograph, and could be used on the Kolsås- and Holmenkoll Lines. In 1995, six two-car T2000 units were delivered for the Holmenkoll Line. They were, at the time, proposed as a possible replacement for all the T1000 and T1300 stock, but were prone to technical problems. They featured both third rail shoes and pantographs.〔
In 1996, the work to establish a financing package for new investments in public transport in Akershus and Oslo started. It was passed, in 2001, by the city and county councils, as well as the Norwegian Parliament. Oslo Package 2 allowed municipal and state grants to be supplemented by increased fare and toll road revenue to finance, among other things, new trains for the metro. The initial order by Oslo Sporveier was for 33 units (or 99 cars), and was approved by the board on 28 June 2003. The initial order cost NOK 1.6 billion, and included options for further orders. Five other manufactures had been rejected during the procurement process. Combined with other investments in the network, the new trains will allow faster travel times on the metro.
In 2005, the city council voted to replace all existing T1000 and T1300 stock with the MX3000, increasing the quantity by another 30 units.〔 With the second order, the price had increased to NOK 2.5 billion. Two test units were delivered in October 2005, and the serial production started in April 2006, with the first deliveries in April 2007. With the delivery of the new trains, Oslo Sporveier received criticism that they had been disloyal to the old red color of the metro, and that they did not follow up on their former design concept from the 1960s through the 80s. During the first 30 days, there occurred two errors: one in the closing mechanism of the doors, and one with a switch in the cab that was not water tight. However, it turned out that Oslo Sporveier had not been accurate enough in specifying the energy consumption of the trains, and the rectifiers on parts of the line needed to be upgraded to supply sufficient power to the trains. During 2007, there were four incidents where the trains were not able to brake at stations. The worst incident occurred when a train slid the from Blindern to Majorstuen.
Following the 2006 decision to convert the Kolsås Line to metro standard, Akershus County Council announced they would order five units. In November 2006, the city government proposed that the maintenance of the new trains be privatized. This resulted in protests from the employees, who campaigned by refusing to work overtime. As a result, after a few weeks, the company lacked 57 trains to provide adequate service. The issue was solved when the socialist opposition parties along with the Liberal Party agreed to postpone the matter until after all the new trains were delivered in 2009. As part of the agreement, a new limited company, Oslo Vognselskap, wholly owned by Kollektivtransportproduksjon, would take ownership of all metro trains and trams used by the operating companies Oslo T-banedrift and Oslo Sporvognsdrift, the latter being the operator of the tramway. Responsibility for the debt accumulated for buying the trains is to be managed by Oslo Vognselskap, while operation and management of the maintenance contracts was transferred to Oslo T-banedrift.
In January 2008, an addition 15 units were ordered by Oslo, with an option for further orders later. This will allow all the eastern lines to have a 7.5-minute headway on their services into the city center, instead of the current 15-minute headway. Trains would start using the balloon loop located at Stortinget, and the western lines will continue to have a 15-minute headway. At the same time, the trains serving the Ring Line will be extended to six cars. The order cost NOK 675 million. In addition, Akershus finalized their order for five units, costing NOK 240 million. Unlike the Oslo-owned units, Akershus' five units will be owned by the transit authority Ruter. The same year, the city council in Oslo decided to upgrade the Holmenkoll Line to metro standard, to allow six-car MX3000 trains to be the main mode of transport to Holmenkollen during the FIS Nordic World Ski Championships 2011. This allowed 9,000 people per hour to be transported to the sports venue. In 2009, the T2000 units were taken out of service, and on 22 April 2010 the last T1300 was taken out of service, making the MX3000 the only units to be used on the Oslo Metro. The city council was considering ordering 15 additional MX3000 to replace the T2000, as an alternative for a NOK 50-million renovation.
In November 2010, the Accident Investigation Board Norway criticized the braking system of the trains. During 2009, there were 83 incidents where trains with locked wheels slid down steep sections of track. The Accident Investigation Board found that the metro had conducted insufficient testing of the braking system on steep slippery lines, had not adjusted the brakes satisfactorily, and had not maintained the trains and tracks sufficiently. In December 2010, Oslo Vognselskap ordered another 32 three-car units, bringing the total order up to 115 three-car units. The last trains will be delivered in 2012. There was political disagreement regarding the final purchase, with the Liberal Party and socialist opposition securing a majority for the purchase, while the right-winged parties voted to order 19 units. The extra trains will make it possible to run all lines except the Holmenkollen Line (Line 1) with six-car lines, compared to a situation with only three-car trains on the Lambertseter Line, the Ring Line and the Kolsås Line (lines 4 and 6) would only use three-car trains.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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