Editing District line (section)

== Rolling stock ==
=== S Stock ===
{{Main|London Underground S7 and S8 Stock}}

[[File:LondonUnderground-S7-DistrictLine-Olympia.JPG|thumb|District line S7 S Stock train at [[Kensington (Olympia) station]], 2013]]

The current 7-car S Stock trains began to enter service on the line in 2013,<ref>{{cite journal | title=District pips Circle to the post | journal=Modern Railways | volume=  70 |issue= 781 |page=12 | date=October 2013}}</ref> beginning with services between Olympia and West Ham, gradually replacing the C and D Stock.<ref name="TfL-upgrade">{{cite web|date=February 2011|title=Our Upgrade Plan|url=http://www.tfl.gov.uk/assets/downloads/corporate/our-upgrade-plan-london-underground-february-2011.pdf|url-status=dead|archive-url=https://web.archive.org/web/20120817225410/http://www.tfl.gov.uk/assets/downloads/corporate/our-upgrade-plan-london-underground-february-2011.pdf|archive-date=17 August 2012|access-date=7 December 2012|publisher=London Underground}}</ref> Like the 8-car variants now in use on the [[Metropolitan line]], these trains are part of Bombardier's [[Bombardier Movia|Movia]] family, with air-conditioning, as the sub-surface tunnels (unlike those on the deep-level tube lines) are able to disperse the exhausted hot air.<ref name=Bombardier>{{cite web |title=Metro&nbsp;— London, United Kingdom |publisher=Bombardier |url= http://www.bombardier.com/en/transportation/products-services/rail-vehicles/metros/london--united-kingdom?docID=0901260d8000d19e |access-date=27 January 2011}}</ref>

With a top speed of {{convert|62|mph|abbr=on}},<ref name=Bombardier /> a 7-car S Stock train has a capacity of 865 passengers compared to 739 for a 6-car C Stock train and 827 for a 6-car D Stock train.<ref name="TfL-Cs">{{cite web |url= http://www.tfl.gov.uk/corporate/modesoftransport/londonunderground/rollingstock/1616.aspx |title= Rolling Stock: C Stock |access-date= 25 November 2012 |publisher= Transport for London |url-status= dead |archive-url= https://web.archive.org/web/20121105134748/http://www.tfl.gov.uk/corporate/modesoftransport/londonunderground/rollingstock/1616.aspx |archive-date= 5 November 2012}}</ref><ref name="TfL-Ds">{{cite web |url=http://www.tfl.gov.uk/corporate/modesoftransport/londonunderground/rollingstock/1618.aspx |title=Rolling Stock: D Stock |access-date=29 November 2012 |publisher=Transport for London |url-status=dead |archive-url=https://web.archive.org/web/20130406233516/http://www.tfl.gov.uk/corporate/modesoftransport/londonunderground/rollingstock/1618.aspx |archive-date=6 April 2013}}</ref><ref name="TfL-SStock" /> With a length of {{convert|117|m}}, the S Stock trains are {{convert|24|m}} longer than the {{convert|93|m|adj=on}} long C stock trains, and station platforms have been lengthened.<ref name="MR201012p46ff">{{cite news |title='S' stock making its mark |work=Modern Railways |location =London |page=46 |date=December 2010}}</ref> The trains have [[regenerative brake]]s, allowing them to return around 20 per cent of their energy to the network.<ref>{{cite web|url=http://www.tfl.gov.uk/assets/downloads/transforming-the-tube-brochure.pdf |title=Transforming the Tube |date=July 2008 |publisher=Transport for London |access-date=28 May 2009 |url-status=dead |archive-url=https://web.archive.org/web/20110605002808/http://www.tfl.gov.uk/assets/downloads/transforming-the-tube-brochure.pdf |archive-date=5 June 2011}}</ref> Traction voltage was increased in 2017 from nominal 630 V to 750 V to give better performance and allow the trains to return more energy to the network through their regenerative brakes.<ref name="TfL-SStock">{{cite web|url=http://www.tfl.gov.uk/corporate/modesoftransport/londonunderground/rollingstock/21815.aspx |title=Rolling Stock: S stock |publisher=Transport for London |access-date=10 January 2012 |url-status=dead |archive-url=https://web.archive.org/web/20131229052317/http://www.tfl.gov.uk/corporate/modesoftransport/londonunderground/rollingstock/21815.aspx |archive-date=29 December 2013}}</ref> 630 V section remains Barons Court-Ealing Broadway. The service was run by [[D78 Stock]] until April 2017.

=== Depots ===
The S Stock trains are maintained at [[Ealing Common Depot]]{{efn|Location of Ealing Common Depot: {{Coord|51|30|24|N|000|17|07|W|region:GB_type:railwaystation|name=61 – Ealing Common Depot}}}} and [[Upminster Depot]].{{efn|Location of Upminster Depot: {{Coord|51|33|38|N|000|15|52|E|region:GB_type:railwaystation|name=62 – Upminster Depot}}}} Ealing Common Depot was built by the District Railway when it was electrified in the early 1900s.{{sfn|Horne|2006|p=42}} Upminster depot was built 1956–1958 when the District line tracks were segregated.{{sfn|Horne|2006|p=81}} Trains may also be stabled in the sidings east of Barking alongside Hammersmith & City Line trains.