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NSB Class 73
NSB Class 73 ((ノルウェー語:NSB-type 73)) is a class of 22 electric multiple units built by Adtranz for the Norwegian State Railways. The four-car trains were modifications of Class 71, which was again based on the Swedish X2. The A-series consists of 16 intercity trains; they were delivered in 1999 and 2000 and are used on the Bergen, Dovre and Sørland Lines. The intercity service was branded as Signatur until 2003. The B-series consists of six regional trains delivered in 2002 and used on the Østfold Line. The regional trains were originally part of the Agenda concept. The trains have a power output of and a maximum speed of . They have an overall length of and have a capacity for 208 seated passengers in the A-series and 250 in the B-series. The trains have tilting mechanism allowing for faster travel through curves.
The trains were delivered late, and were put into service after the Norwegian Railway Inspectorate had given dispensation from parts of the safety regulation. On 17 June 2000, a train derailed at Nelaug Station after an axle broke. The class was grounded for a month, and the investigation showed both design errors, and lack of proper inspection and testing. After they were put back into service, they were not allowed to use the tilting mechanism—thus not being allowed to run faster than their predecessors. The construction was reinforced, and in 2004, the tilting mechanism was re-enabled along with higher speeds. In 2007, a train derailed on the Bergen Line, and questions were raised about the trains' ability to operate in snow, however the accident report showed that the trains' front axle load was just as able to cope with heavy snow conditions as the locomotives running on the line, and that the derailment would have been more severe if the same conditions would hit a normal train with less secure connections between carriages. On 16 June 2011, two units were destroyed when the train ran into a fire in a snow tunnel at Hallingskeid Station.
==Specifications==
Class 73 is a four-car electric multiple unit built by Adtranz. Each four-car train has eight bogies—of which three are powered—with a total power output of .〔 The trains have active tilting, which allows speeds 20 to 30 percent higher than conventional trains through curves on conventional lines.〔 Maximum permitted speed is . A four-car train is long; an A-series weighs while a B-series unit weighs .〔 The trains have a steel body and the entire cabin is pressurized. Rail brakes are installed on all carrying bogies.〔
The A-series has a capacity of 207 seated passengers, while the B-series has room for 250. The difference is due to the B-series having a smaller bistro and more compact seating.〔 In the A-series, each of the four cars has seating in a different color (blue in BFM73 car, green in BMU73, red in BFR73, and yellow leather in BM73 and in the bistro area in BFR73). Originally, three of the cars had floors with carpet, while the fourth car (BFM73) had vinyl, of consideration to people with allergies. The carpets were removed in about 2005 as it was difficult to keep them clean. Seating is in two classes, standard and Komfort (originally "Plus"); the latter (BM73 car) with leather seating and power supply for laptops. All the cars have cherry tree wood interior. The trains are equipped with a dining section (BFR73 car) and warm meals can be served at the seat or in the diner. The menu is according to the time of day, with breakfasts in the morning and larger meals in the afternoon and evening. The trains also feature a family section with a play area and HC area (BFM73 car).〔 The BFM73 car has also a bicycle room behind the driver's cab. From 2011, the trains are equipped with free wireless Internet.
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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