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London Underground 1996 Stock : ウィキペディア英語版 | London Underground 1996 Stock
The London Underground 1996 stock is used on the Jubilee line of the London Underground. It was built by Alstom and began service in 1997. Its sister stock is the 1995 Stock used on the Northern line, having been built at a similar time by the same manufacturer. The stock was used initially in six-car trains, expanded to seven-car trains in 2005. It is fitted with a digital voice announcement system and dot-matrix displays to provide passenger information. ==Context== The development programmes of 1995 stock and 1996 were conducted in parallel. Detailed design was done by Alstom S.A. at its Birmingham and Rugby facilities, and the first six train sets were manufactured in Alstom's Barcelona factory to the 1996 stock design. All type approvals were conducted on these early train sets. 1995 stock was produced in the Barcelona factory afterwards, and the balance of the 1996 stock followed. Final assembly and equipping was at Alstom's facility at Washwood Heath, Birmingham, on adjacent production lines. 1995 and 1996 stock are similar but have different interiors, seating layouts and cabs (designed by Warwick Design Consultants), traction packages and train management systems, and slight differences in tripcock geometry. 1995 stock uses LED body-side lights, 1996 stock filament bulbs. The most apparent difference is the bogie: 1996 stock uses an Alstom bogie with a rubber suspension, 1995 stock has AdTranz bogies with air suspension to cope with the arduous track conditions of the underground portions of the Northern line. The main technical differences arose because 1996 stock was designed for "cheapest first cost", while 1995 stock was designed for "life cycle cost", as Alstom had won the contract to act as service provider and maintainer of this stock. Alstom subsequently won the maintenance contract for 1996 stock, to be carried out at the new Stratford market depot in East London.
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