The 192nd and final ‘S’ Stock train was delivered to London Underground on November 10, more than 6½ years after the first pre-production train arrived.
The fleet, which has taken nine years to deliver from the signing of the contract, is made up of 59 eight-car units that operate on the Metropolitan Line and 133 seven-car trains that operate across the Circle, District and Hammersmith & City lines.
Making a total of 1403 individual cars, the units are maintained by London Underground at Neasden, Ealing and Upminster depots, supported by their manufacturer Bombardier.
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However, all of the ‘S’ Stock trains still need to be returned to Bombardier’s works in Derby on a programmed basis for modification works as part of the sub-surface Automatic Train Control [ATC] resignalling project being undertaken by Thales. These mods involve the installation of a new communications-based train control system that will operate with the new signalling, which is due to go live in 2018 (see October 2016 issue).
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