London Underground S Stock
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| S Stock | |
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| Manufacturer | Bombardier Transportation |
| In Service | from 2009 (projected) |
| Lines Served | Circle District Hammersmith & City Metropolitan |
| Width | 2.92m |
| Maximum Speed | 100 km/h (62 mph) |
| Stock Type | Subsurface |
The S Stock is a class of sub-surface train currently under construction by Bombardier for the London Underground to replace ageing A60 and A62 Stock on the Metropolitan Line, C69 and C77 Stock on the Circle, Hammersmith & City and District Lines (Edgware Road-Wimbledon) and D78 Stock on the District Line.
The 'S' designation stands for 'Space,' which refers to a series of improvements over older London Underground subsurface stock; most notably, the ability to walk the entire length of the train (all other stock has a set of doors between each carriage which are only to be used in emergency). The stock will be delivered as seven-car trains between late 2009 and 2015[1] and will also feature air conditioning throughout - the sub-surface tunnels being able to displace the exhausted hot air. These trains will also have regenerative brakes, returning 30% of their energy use to the network and so will reduce emissions of CO2.
S Stock will not be used for the extended East London Line, as the ELL is being transferred to London Overground. Instead it will be worked using a new batch of Electrostar units. [2]
[edit] References
| London Underground rolling stock | |
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1900 - 1903 - 1906 - 1914 - 1915 - 1920 - Watford Joint |
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M - MV - MW - N - R - S - T - U - V - VT - W |
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G23 - M - N - O - CO - P - P1 - CP - Q23 - Q27 - Q31 - Q35 - Q38 |
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A - B - C - D - E - F - G - H - K - Metropolitan District |
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Sleet locomotives - Coaching stock - Departmental - Engineering |
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