|
The South West Trains (SWT) Class 458 (or 4JOP) outer-suburban electric multiple units were built by Alstom at Washwood Heath between 1998 and 2002. The 30 four-car units are part of Alstom's ''Juniper'' family of trains, which also includes Classes 334 and 460. These trains have been used by SWT since they were built. Since 2013 they are being merged with the mechanically similar Class 460 fleet and reconfigured into 36 five-cars units, which are being designated Class 458/5. ==Description== Thirty of these 4-car trains were ordered by SWT in 1998, to create extra capacity and to replace some of the ageing Class 411 (4CEP) units. Deliveries of these units began in 1998.〔(The Fall and Rise of South West Trains' 458 Units ) – Southern Electric Group. Retrieved 26 December 2010.〕 They were delivered in SWT's mainline livery of mainly white, with a blue band, and red/orange 'swish' at cab ends. They are the only Juniper EMUs to feature end gangways. The units are numbered 458001-030. Each unit was formed from two outer driving motors, an intermediate trailer, and an intermediate motor. The maximum speed is .〔 The class initially suffered from major technical problems, such as leaky roofs and failing electronics.〔 In 2004, when the full fleet was in service, reliability was so poor that SWT planned to return them to the leasing company and replace them with new Class 450 ''Desiro'' trains.〔 〕 At that time, the trains only managed an average of between failures, compared with an average of for a Class 450 ''Desiro'' and for the previous slam-door trains.〔 At the 11 December 2005 timetable change, use of the trains was significantly reduced and only three were required each day. Subsequently, reliability improved sufficiently to allow the trains to be retained. By the end of 2012, the fleet had achieved a Miles per Technical Incident Number of 106,049, becoming the most reliable fleet in Britain and the first fleet to achieve a 6 figure rating. As a result, the fleet was awarded ''Modern Railways'' Golden Spanner award in the New Generation EMU category on 23 November 2012. The technical description of the formation is DMCO+PTSO+MSO+DMCO. Individual vehicles are numbered as follows: *67601-67630 – DMCO *74001-74030 – PTSO *74101-74130 – MSO *67701-67730 – DMCO 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「British Rail Class 458」の詳細全文を読む スポンサード リンク
|