This article is about London Underground rolling stock introduced from 2010. Both types have air-conditioning and low floors to london underground rolling stock pdf accessibility for disabled people, and it is also possible for a passenger to walk from one car to the next while the train is moving, unlike older trains on the network. City line in July 2012, and the Circle and District lines in September 2013. D Stock on the rest of the District line in April 2017.
City lines and 58 S8 eight-car trains for the Metropolitan line. 1 in use on the Metropolitan line, ordered as part of the Metropolitan Line extension to Watford Junction. This train is formed of a seven-car S7 and an additional car from another S7, forming an eight-car train. This train, however, retains the all-longitudinal seating of the S7, and thus can be distinguished from the remaining S8s. The S8 Stock entered service between 2010 and 2012, operating all services by September 2012. The S Stock has faster acceleration than previous trains, at 1.
8 mph slower than A Stock but faster than C and D Stocks. During the period of dual operation with both old and new trains, the stock had its performance capped to match that of the older trains in order to comply with signalling constraints and avoid bunching of the service. The voltage is being increased from nominal 630 volts to 750 volts. This allows for better performance and also for the increased power demands of air-conditioned, fully motored-axle trains, and allow the trains to return energy to the network through regenerative braking. It was initially intended that the upgrade would happen in 2018, but has been delayed. End external displays show two lines of text: the top line for the destination, and the bottom for the line. The DMIs show destination and line, and can display other messages such as safety notices.
There are also DMIs on the exterior, with text alternating between destination and line, and on S8 stock the type of service, i. Another new feature is that to prevent accidental pressing of emergency alarms there are flaps over the alarm buttons where the wheelchair spaces are. This allows passengers to move from crowded cars to ones with more room, provides extra room for standing and creates a sense of security. CCTV enables the driver to see into every car, while track-to-train video links give the driver a view of the train exterior before leaving a station. There is a fold-out set of steps in each driver’s cab to allow fast evacuation in an emergency. S7 Stock has longitudinal seating throughout, S8 a mix of transverse and longitudinal seating, with four wheelchair spaces per train. S7 Stock trains are 117.
The S Stock is the first on the Metropolitan line with dot-matrix indicators and automated voice announcements. S8 Stock operates as an eight-car formation while S7 Stock operates as a seven-car formation. As part of the Transported by Design programme of activities, on 15 October 2015, after two months of public voting, the walk-through S Stock train was elected by Londoners as one of the 10 favourite transport design icons. A London Underground S7 Stock train at Wood Lane operating a Circle line service. Watford North Curve from 9 November 2009.