London Underground S7 and S8 Stock

Last updated

London Underground S7 and S8 Stock
Amersham station MMB 18 S Stock.jpg
Metropolitan line S8 Stock at Amersham in 2013
Bombardier S Stock Circle line Interior 3.jpg
The interior of a Circle line S7 Stock train
In service31 July 2010 − present
Manufacturer Bombardier Transportation
Built at Derby Litchurch Lane Works, Derby, England
Family name Movia
Replaced
Constructed2008–2017
Entered service
  • 31 July 2010 (S8)
  • 6 July 2012 (S7)
Number built192 trains (133 S7, 59 S8) [1]
Number in service192 trains [1]
Formation
  • 7 cars per train (S7)
  • 8 cars per train (S8)
Fleet numbers
  • S7: 301/302–567/568
  • S8: 001/002–115/116
Capacity
  • 1,209 (S7)
  • 1,350 (S8)
Operators London Underground
Depots
Lines served
  • S7:
  • S8: Metropolitan
Specifications
Car body constructionAluminium
Train length
  • S7: 117.45 m (385 ft 4 in)
  • S8: 133.68 m (438 ft 7 in)
Car length
  • 18.15 m (59 ft 7 in) (DM)
  • 16.23 m (53 ft 3 in) (NDM)
[2]
Width2.92 m (9 ft 7 in) [3]
Floor height1,005 mm (39.6 in)
EntryLevel
Doors6 per car (3 per side)
Wheel diameter770–710 mm (30–28 in) (new–worn) [4]
Wheelbase 2.08 m (6 ft 10 in) [4]
Maximum speed100 km/h (62 mph)
Traction systemBombardier MITRAC IGBT–VVVF
Traction motors 3-phase AC induction motor
Acceleration 1.3 m/s2 (2.9 mph/s)
Deceleration 1.4 m/s2 (3.1 mph/s)
Electric system(s) 630–750 V DC fourth rail
Current collector(s) Contact shoe
Bogies Bombardier FLEXX Metro 1200 SSL [4]
Safety system(s)
Track gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge

The London Underground S7 and S8 Stock, commonly referred to as S Stock, is a type of passenger train running on the London Underground's subsurface lines since 2010. Manufactured by Bombardier Transportation's Derby Litchurch Lane Works, the S Stock was ordered to replace the A60, A62, C69, C77 and D78 stock on the Metropolitan, District, Hammersmith & City, and Circle lines, which all dated from the 1960s and 1970s.

Contents

The order was for a total of 192 trains (1,403 cars), and consisted of two types, S7 Stock for the Circle, District and Hammersmith & City lines, and S8 Stock for the Metropolitan line, with differences in the arrangement of seating and number of cars. Both types have air-conditioning and lower floors to ease accessibility for people with disabilities, and also have open gangways to allow passengers to move from one car to another whilst the train is moving. The order was said to be the biggest single rolling-stock order in Britain at a cost of £1.5 billion.

Passenger service began on the Metropolitan line in July 2010, the Hammersmith & City line in July 2012, and the Circle and District lines in September 2013. The S Stock completely replaced the A Stock on the Metropolitan line in September 2012, and the C Stock on the Circle and Hammersmith & City lines in February 2014, and on the Edgware Road branch of the District line in June 2014; it fully replaced the D Stock on the rest of the District line in April 2017.

Overview

S8 Stock during testing near Northwood S stock northwood.JPG
S8 Stock during testing near Northwood

The S designation stands for suburban, [5] following the practice of designating sub-surface London Underground stock with a letter associated with its intended route—A Stock on the Metropolitan line to Amersham, [6] C Stock on the Circle line, [7] and D Stock on the District line. [8]

Part of Bombardier's Movia family, the stock consists of 192 trains, with 133 S7 seven-car trains for the Circle, District and Hammersmith & City lines, and 59 S8 eight-car trains for the Metropolitan line. [9] [1] The order was said to be the biggest single rolling-stock order in Britain at a cost of £1.5 billion. [10] [11]

S Stock trains have faster acceleration than previous models, at 1.3 m/s2 (2.9 mph/s); their top speed of 100 km/h (62 mph) is 13 km/h (8 mph) slower than A Stock, but faster than C and D Stocks. [12] 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. S8 stock trains seat 306 passengers compared with 448 for A Stock, a reduction of 32%, but can accommodate 25% more standing passengers (1,226 compared with 976) and have dedicated space for wheelchairs. [10]

As of 2017, the fleet is significantly more reliable than older trains, averaging around 110,000 km (68,000 mi) between failures [13] [14] – around seven times further than A Stock and C Stock trains, and three times further than D Stock. [14]

The voltage has been 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. [3]

From 2016, the fleet has been converted to use communications-based train control (CBTC) as part of the Four Lines Modernisation. Upon completion of the project, there will be more frequent service as well as faster journey times. [15] [16] As of 2023, trains are manually operated on most of the Metropolitan line and about half of the District line; the Circle and Hammersmith & City lines are fully automatic. [17]

Features

Selective door operation (SDO) is used at some stations where the platform is shorter than the train, such as at Baker Street Door not in use indicator S7.JPG
Selective door operation (SDO) is used at some stations where the platform is shorter than the train, such as at Baker Street

The S Stock is air-conditioned throughout: the sub-surface tunnels (unlike deep-level tube lines) allow the exhausted hot air to disperse, [10] and two-thirds of the sub-surface network is in the open air. [18] The stock has regenerative brakes, returning around 20% of their energy to the network and thus increasing energy efficiency. [19]

Gangway connection between cars Articulate section S stock.JPG
Gangway connection between cars

End external displays show two lines of text: the top line for the destination, and the bottom for the line. Internally, it has larger dot matrix indicators (DMIs) than D Stock (A and C Stock lacked DMIs). 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 stopping pattern (fast, semi-fast or all stations). The S8 Stock is the first on the Metropolitan line with dot-matrix indicators and automated voice announcements. Unlike the deep-tube stock, the DMIs are ceiling-hung rather than on the wall.

The air-conditioning system, the first on London Underground trains, is supplied by Mitsubishi and has two circuits so that if one fails there is still 50% capacity. [18] Open gangways from car to car (similar to London Overground's Class 378) allow passengers to move from crowded cars to ones with more room, provide extra room for standing, and create 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. [18] There is a fold-out set of steps in each driver's cab to allow fast evacuation in an emergency. [20]

The S stock has cantilevered seating for easy cleaning and accessible storage of bags. [21] The seating configurations are different between the two models of trains: the S7 Stock, used on inner city lines with higher passenger traffic, has longitudinal seating throughout, while the S8 Stock, used for the longer journeys from the outer suburbs, has a mix of transverse and longitudinal seating, with four wheelchair spaces per train. S7 Stock trains are 117.45 metres (385 ft 4 in) long, while the S8 trains measure 133.68 m (438 ft 7 in). [22]

To prevent accidental pressing of emergency alarms, there are flaps over the alarm buttons next to wheelchair spaces.

Although S Stock trains can operate on all four sub-surface lines, S8 trains are used on the Metropolitan line and S7 trains are used on the other three lines. Selective door operation is used at certain stations that are shorter than the train. S7 Stock has seven cars per train, while S8 Stock has eight.

Design icon

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. [23] [24]

History

Following the implementation of the London Underground Public Private Partnership (PPP) in 2003, the Metronet consortium became responsible for the infrastructure on the District, Circle, Hammersmith & City and Metropolitan lines. [25] As part of the consortium, Bombardier Transportation would design, build and maintain new trains for these lines. [25] [26] 190 trains would be built by Bombardier at Derby Litchurch Lane Works – 40 trains for the Circle and Hammersmith & City lines, 78 trains for the District line, and 72 trains for the Metropolitan line. [25] All the trains would be built to the same design, saving on parts and maintenance costs for Metronet. The only difference would be the length of the train, given different platform lengths on different lines. [27] The first train was planned to enter service on the Metropolitan line by 2009, with all trains in service by 2015. [25]

In December 2006, Metronet and London Underground unveiled the completed design, with air-conditioning and walk through carriages for the first time on the Underground. [28] [29] London Underground also announced that 40 additional cars had been ordered from Metronet/Bombardier at a cost of £105 million. This would allow for a seventh carriage on Circle and Hammersmith & City line trains, unifying the fleet with the District line trains. [28]

In July 2007, Metronet, the private consortium responsible for the infrastructure for the sub-surfaces lines, collapsed due to financial difficulties. [30] Following negotiations with Bombardier to allow for continued delivery of 2009 Stock and S Stock trains, TfL took ownership of Metronet in May 2008. [31] [32] A mockup of the train was shown off to the public in September 2008. [33]

Entry into service

From March 2009, trains were tested prior to delivery at Old Dalby Test Track in Leicestershire, preventing the need for weekend or evening closures of lines in London to test trains. [34] The first train was delivered to London Underground in October 2009. [34] Built at Bombardier's Derby Litchurch Lane Works, trains were constructed at a rate of six a week at the height of production. [35]

In 2015, TfL ordered an additional S8 train as part of the Croxley Rail Link at a cost of £15.5 million, taking the total ordered to 192. The final set was delivered 10 November 2016. [1] [36] The extension to the Metropolitan line was cancelled in 2017. [37]

Metropolitan line

Metropolitan line S8 Stock train at Amersham. Amersham Bombardier S8 Surface Stock Metropolitan line 1.jpg
Metropolitan line S8 Stock train at Amersham.
The interior of an S8 Stock train with transverse seats. London Underground Metropolitan Line S Stock - 7593144062.jpg
The interior of an S8 Stock train with transverse seats.

S8 Stock was initially tested overnight between Amersham and Watford via the Watford North Curve from 9 November 2009. Driver training began in early January 2010, and the first train entered revenue service on 31 July 2010, shuttling between Wembley Park and Watford. [18]

By 27 June 2011, S8 Stock was running along the whole Metropolitan line. Deliveries were suspended by Transport for London in November 2011 due to concerns over reliability. A number of trains were delivered to London Underground's Neasden Depot, but were not accepted to enter service. Deliveries resumed in mid-December 2011. [38]

In August 2012, London Underground confirmed that strap handles would be introduced on S8 Stock, in response to passenger complaints over the height of the handrails as compared with A Stock. [39]

By 15 September 2012, all 58 S8 trains had been delivered to Neasden Depot. [35] The A Stock trains were completely withdrawn 11 days later. [40] In November 2012, it was reported that 37 of the new trains would be sent back to Bombardier for urgent modification at Bombardier's cost, and that drivers were unhappy with their cabs. [41] An additional S8 train was later delivered, as part of the subsequently cancelled Croxley Rail Link project. [36]

There were also three additional eight-car trains called an S7+1 in use on the Metropolitan Line while the eight-car S8 trains were returned for engineering modifications and ATC fitment. These trains were formed of a seven-car S7 and an additional car from another S7, forming an eight-car train. These trains, however, retained the all-longitudinal seating of the S7, and thus could be distinguished from the remaining S8s. Two of these trains were modified back to seven-car trains and transferred for service on the Circle, District and Hammersmith & City Lines in 2018. [42]

Hammersmith & City line

C Stock (left) and S7 Stock (right) at Hammersmith in July 2013 Old and New trains, Hammersmith station.jpg
C Stock (left) and S7 Stock (right) at Hammersmith in July 2013

The first trains entered service on 6 July 2012, from Hammersmith to Moorgate. S7 trains are longer than the C69 and C77 trains they replaced (seven cars and 117.45 m (385 ft 4 in) long instead of six cars and 93 m (305 ft 1 in) long), so some station platforms had to be lengthened to allow for S7 operations. For stations where this has proved physically impossible, such as Baker Street, the trains use their selective-door-opening capability whereby the doors at the end of the train will not open. [18]

On 4 December 2012, an S7 train went east of Moorgate to Barking for testing. This was the first time an S7 train had been seen in peak hours. S7 Stock began operating a full service from Hammersmith to Barking on 9 December 2012. [43] The line was completely operated with S7 stock from 11 February 2014. [35]

Circle line

Circle line S7 Stock train at Wood Lane. Bombardier S Stock Circle line Wood Lane.jpg
Circle line S7 Stock train at Wood Lane.
The interior of an S7 Stock train, showing the wheelchair parking places and longitudinal seating. Bombardier S Stock Circle line Interior 1.jpg
The interior of an S7 Stock train, showing the wheelchair parking places and longitudinal seating.

The S7 Stock entered service on the Circle line on 2 September 2013, [44] and completely replaced the C Stock trains on the line by 11 February 2014. [35]

The Circle line's C Stock were replaced ahead of the District line's D Stock, as they were described by London Underground as being "in an increasingly poor state", and the D Stock had been extensively refurbished between 2005 and 2008. [45]

District line

The last remaining D78 Stock train next to an S7 Stock train at Ealing Broadway station on 21 April 2017. D Stock and S Stock side by side on last day of D Stock operation.jpg
The last remaining D78 Stock train next to an S7 Stock train at Ealing Broadway station on 21 April 2017.

The District line was the last line to be fully served by the S7 Stock, due to its existing D78 Stock being newer than other trains that the S7 Stock was ordered to replace, as well as its most recent refurbishment in 2005. The first S7 Stock train entered passenger service on the line between Olympia and West Ham on 2 September 2013.

On 6 February 2014, the S7 Stock started running between Wimbledon and Edgware Road. The S7 Stock started services to Ealing Broadway on 13 June 2014, and on 17 June saw the start of commercial service to Richmond. On 16 January 2015, the S7 Stock began running to Upminster. Withdrawal of the D78 Stock began on 19 January. In November 2016, the last of 192 S stock trains were completed by Bombardier and handed over to London Underground. [1] [46]

The D78 Stock was completely replaced by the S7 with the withdrawal of the final unit from service on 21 April 2017. [47]

The S7 Stock received the Class 499/5 designation on the TOPS system in order to operate on the District line between Gunnersbury and Richmond, and between East Putney and Wimbledon, as these track sections are owned by Network Rail.[ citation needed ]

Automatic operation

From 2016, the Four Lines Modernisation project has been converting the four sub-surface lines to automatic train operation using communications-based train control. Upon completion of the project, there will be more frequent service as well as faster journey times. [15] [16] The section between Latimer Road and Hammersmith was the first to be switched over to automatic operation on 10 March 2019, [48] with further extensions being implemented in stages called Signal Migration Areas (SMA); as of January 2023 the first six SMA areas have been implemented. Due to various reasons such as funding and technical difficulties, District line automation where it shares tracks with Network Rail or Piccadilly line services has been scaled back until further notice. [17] As of 2023, trains are manually operated on most of the Metropolitan line and about half of the District line; the Circle and Hammersmith & City lines are fully automatic. [17]

Accidents and incidents

List of cars

Each car has a five-digit number: the second digit identifies the type of car, the last three digits the set number (001–116, 301–568). A-end cars have odd numbers; D-end even numbers. 25nnn cars replace 23nnn cars on trains equipped with de-icing equipment.

Set compositions [50] [51]
Set typeodd setsA-endD-endeven sets
DMM1M2MSMSM2M1DM
S7 de-icer301–38521nnn22nnn24nnn—24nnn25nnn22nnn21nnn302–386
S7387–56721nnn22nnn24nnn—24nnn23nnn22nnn21nnn388–568
S8 de-icer001–05521nnn22nnn23nnn24nnn—24nnn25nnn22nnn21nnn002–056
S8057–11521nnn22nnn23nnn24nnn—24nnn23nnn22nnn21nnn058–116

See also

Related Research Articles

<span class="mw-page-title-main">Metropolitan line</span> London Underground line

The Metropolitan line, colloquially known as the Met, is a London Underground line between Aldgate in the City of London and Amersham and Chesham in Buckinghamshire, with branches to Watford in Hertfordshire and Uxbridge in Hillingdon. Printed in magenta on the tube map, the line is 41.4 miles (66.7 km) in length and serves 34 stations. Between Aldgate and Finchley Road, the track is mostly in shallow "cut and cover" tunnels, apart from short sections at Barbican and Farringdon stations. The rest of the line is above ground, with a loading gauge of a similar size to those on main lines. Just under 94 million passenger journeys were made on the line in 2019.

<span class="mw-page-title-main">Circle line (London Underground)</span> London Underground line

The Circle line is a spiral-shaped London Underground line, running from Hammersmith in the west to Edgware Road and then looping around central London back to Edgware Road. The railway is below ground in the central section and on the loop east of Paddington. Unlike London's deep-level lines, the Circle line tunnels are just below the surface and are of similar size to those on British main lines. Printed in yellow on the Tube map, the 17-mile (27 km) line serves 36 stations, including most of London's main line termini. Almost all of the route, and all the stations, are shared with one or more of the three other sub-surface lines, namely the District, Hammersmith & City and Metropolitan lines. On the Circle and Hammersmith & City lines combined, over 141 million passenger journeys were recorded in 2019.

<span class="mw-page-title-main">District line</span> London Underground line

The District line is a London Underground line running from Upminster in the east and Edgware Road in the west to Earl's Court in west London, where it splits into multiple branches. One branch runs to Wimbledon in south-west London and a short branch, with a limited service, only runs for one stop to Kensington (Olympia). The main route continues west from Earl's Court to Turnham Green after which it divides again into two western branches, to Richmond and Ealing Broadway.

<span class="mw-page-title-main">East London line</span> Railway line in London

The East London line is a railway line running north to south through the East, Docklands and South areas of London. It is used by London Overground services. It was previously a line of the London Underground.

<span class="mw-page-title-main">Hammersmith & City line</span> London Underground line

The Hammersmith & City line is a London Underground line that runs between Hammersmith in west London and Barking in east London. Coloured pink on the Tube map, it serves 29 stations over 15.8 miles (25.5 km). Between Farringdon and Aldgate East it skirts the City of London, the capital's financial heart, hence the line's name. Its tunnels are just below the surface and are a similar size to those on British main lines. Most of the track and all stations are shared with the District, Circle or Metropolitan lines. Over 141 million passenger journeys are made each year on the Hammersmith & City and Circle lines.

<span class="mw-page-title-main">Edgware Road tube station (Circle, District and Hammersmith & City lines)</span> London Underground station on the Circle, District and Hammersmith & City lines

Edgware Road is a London Underground station on the Circle, District and Hammersmith & City lines, located on the corner of Chapel Street and Cabbell Street, within Travelcard zone 1. A separate station of the same name but served by the Bakerloo line is located about 150 metres away on the opposite side of Marylebone Road.

<span class="mw-page-title-main">High Street Kensington tube station</span> London Underground station

High Street Kensington is a London Underground station on Kensington High Street, Kensington. It is served by the Circle and District lines and is located in Travelcard Zone 1. On the Circle line the station is between Notting Hill Gate and Gloucester Road stations, and on the District line it is between Earl's Court and Notting Hill Gate stations. Kensington Arcade forms the entrance to the station.

<span class="mw-page-title-main">London Underground rolling stock</span> Passenger trains that run on the London Underground

London Underground rolling stock includes the electric multiple-unit trains used on the London Underground. These come in two sizes, smaller deep-level tube trains and larger sub-surface trains of a similar size to those on British main lines, both running on standard gauge tracks. New trains are designed for the maximum number of standing passengers and for speed of access to the cars.

<span class="mw-page-title-main">History of the London Underground</span>

The history of the London Underground began in the 19th century with the construction of the Metropolitan Railway, the world's first underground railway. The Metropolitan Railway, which opened in 1863 using gas-lit wooden carriages hauled by steam locomotives, worked with the District Railway to complete London's Circle line in 1884. Both railways expanded, the Metropolitan eventually extending as far as Verney Junction in Buckinghamshire, more than 50 miles (80 km) from Baker Street and the centre of London. The first deep-level tube line, the City and South London Railway, opened in 1890 with electric trains. This was followed by the Waterloo & City Railway in 1898, the Central London Railway in 1900, and the Great Northern and City Railway in 1904. The Underground Electric Railways Company of London (UERL) was established in 1902 to fund the electrification of the District Railway and to complete and operate three tube lines, the Baker Street and Waterloo Railway, the Charing Cross, Euston and Hampstead Railway and the Great Northern, Piccadilly and Brompton Railway, which opened during 1906–1907. By 1907, the District and Metropolitan Railways had electrified the underground sections of their lines.

<span class="mw-page-title-main">London Underground O and P Stock</span>

The London Underground O and P Stock electric multiple units were used on the London Underground from 1937 to 1981. O Stock trains were built for the Hammersmith & City line, using metadyne control equipment with regenerative braking, but the trains were made up entirely of motor cars and this caused technical problems with the traction supply so trailer cars were added. P Stock cars were built to run together with the O Stock cars now surplus on Metropolitan line Uxbridge services. The trains had air-operated sliding doors under control of the guard; the O Stock with controls in the cab whereas the P Stock controls in the trailing end of the motor cars. The P Stock was introduced with first class accommodation, but this was withdrawn in 1940.

<span class="mw-page-title-main">Metronet (British infrastructure company)</span>

Metronet Rail was an asset-management company responsible for the maintenance, renewal and upgrade of the infrastructure, including track, trains, signals, civils work and stations, on several London Underground lines. It was one of two infrastructure companies in a public-private partnership (PPP) with the Underground.

<span class="mw-page-title-main">London Underground A60 and A62 Stock</span> Class of sub-surface train run on the London Underground, built in 1960

The London Underground A60 and A62 Stock, commonly referred to as A Stock, was a type of sub-surface rolling stock which operated on the Metropolitan line of the London Underground from 12 June 1961 to 26 September 2012, and on the East London line from 1977 until 22 December 2007, when it closed to be converted into London Overground.

<span class="mw-page-title-main">Hammersmith tube station (Circle and Hammersmith & City lines)</span> London Underground station

Hammersmith is a London Underground station in Hammersmith. It is the western terminus of the Circle and Hammersmith & City lines. The station is in Travelcard Zone 2.

<span class="mw-page-title-main">London Underground D78 Stock</span> Ex-London Underground rolling stock that ran on the District Line

The London Underground D78 Stock, commonly referred to as D Stock, was a type of sub-surface rolling stock which operated on the District line of the London Underground, except on the Wimbledon to Edgware Road service. The first units were withdrawn in January 2015 with the last withdrawn on 21 April 2017.

<span class="mw-page-title-main">London Underground C69 and C77 Stock</span> Type of sub-surface railway vehicle

The London Underground C69 and C77 Stock, commonly referred to as the C Stock, was a type of sub-surface rolling stock used on the Circle, District and Hammersmith & City lines of the London Underground between 1970 and 2014. They were replaced by the S7 Stock.

<span class="mw-page-title-main">London Underground 2009 Stock</span> An electric multiple unit used on the Victoria line of the London Underground

The London Underground 2009 Stock is a type of London Underground train built by Bombardier as part of its Movia family at its Derby Litchurch Lane Works, England. A total of 47 eight-car trains have been built for the Victoria line. They entered service between July 2009 and June 2011 and replaced the 1967 Tube Stock. It is the first new deep level tube stock on the Underground network since the 1996 Stock entered service on the Jubilee line in 1997.

<span class="mw-page-title-main">Alstom Movia</span> Family of metro train cars built by Bombardier Transportation and later by Alstom

The Alstom Movia is a family of metro train cars designed by Adtranz and later built by Bombardier Transportation and Alstom. The structure and body shell are fully customisable for the needs of each system that orders it. Unlike most traditional metro trains, they usually have full-width gangways between carriages, allowing passengers to walk the entire length of the train. The design was developed by Adtranz, which was acquired by Bombardier in 2001. Since Alstom's acquisition of Bombardier in 2021, Alstom will be responsible for construction and delivery of future Movia metro train cars.

<span class="mw-page-title-main">History of the District line</span>

The history of the District line started in 1864 when the Metropolitan District Railway was created to create an underground 'inner circle' connecting London's railway termini. The first part of the line opened using Metropolitan Railway gas-lit wooden carriages hauled by steam locomotives. The District introduced its own trains in 1871 and was soon extended westwards through Earl's Court to Fulham, Richmond, Ealing and Hounslow. After completing the 'inner circle' and reaching Whitechapel in 1884, it was extended to Upminster in East London in 1902. To finance electrification at the beginning of the 20th century, American financier Charles Yerkes took it over and made it part of his Underground Electric Railways Company of London (UERL) group. Electric propulsion was introduced in 1905, and by the end of the year electric multiple units operated all of the services.

<span class="mw-page-title-main">Paddington tube station (Circle and Hammersmith & City lines)</span> London Underground station

Paddington is a London Underground station served by the Circle and Hammersmith & City lines. It is located adjacent to the north side of Paddington mainline station and has entrances from within the mainline station and from Paddington Basin. The station is between Royal Oak and Edgware Road and is in London Fare Zone 1.

The Four Lines Modernisation (4LM) is a series of projects by Transport for London (TfL) to modernise and upgrade the sub-surface lines of the London Underground: the Circle, District, Hammersmith & City and Metropolitan lines. The upgrades entail new rolling stock, new signalling and new track and drainage.

References

  1. 1 2 3 4 5 Hewitt, Sam (3 February 2017). "Final 'S' Stock delivered but work goes on – Rail Express". Rail Express. Retrieved 15 May 2021. 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.
  2. ↑ "Metro – London, United Kingdom". Bombardier . Archived from the original on 27 December 2017. Retrieved 24 January 2023.
  3. 1 2 "S stock | Transport for London". 29 December 2013. Archived from the original on 29 December 2013. Retrieved 12 March 2018.
  4. 1 2 3 "Business Unit Bogies - Product Portfolio Presentation" (PDF). Bombardier Transportation. January 2018. Retrieved 19 November 2023.
  5. ↑ "Research Guide No 19: A Brief History of the Hammersmith and City Line" (PDF). tfl.gov.uk. Transport for London. 23 September 2013. p. 5. Retrieved 4 July 2023. In 2012, the first of the new generation of S (suburban) stock trains was introduced
  6. ↑ Bruce, J. Graeme (1983) [1970]. Steam to Silver: A history of London Transport Surface Rolling Stock. Harrow Weald: Capital Transport. p. 110. ISBN   0-904711-45-5.
  7. ↑ Bruce 1983, p. 114
  8. ↑ Bruce 1983, p. 118
  9. ↑ "Four Lines Modernisation". Transport for London. n.d. Retrieved 15 May 2021. A fleet of 192 modern, air-conditioned, walk-through S-stock trains run across the Circle, Hammersmith & City, District and Metropolitan lines.
  10. 1 2 3 "Metro — London, United Kingdom". Bombardier. Archived from the original on 12 October 2011. Retrieved 27 January 2011.
  11. ↑ "Metropolitan Line air-conditioned Tube trains launched". BBC News. 2 August 2010. Retrieved 30 January 2011.
  12. ↑ "Saluting the success of S-Stock S7s and S8s". railmagazine.com. 4 February 2015. Retrieved 12 December 2022. While the S-Stock has a faster acceleration than the older stock it has replaced, its overall top speed is slower, by 8mph. However, this is still faster than the C-Stock and D-Stock it has replaced on the H&C Line and is replacing on the District Line.
  13. ↑ "S Stock – 191 all out | RailStaff". Railstaff. 11 January 2016. Retrieved 8 March 2021.
  14. 1 2 Hawkins, John (January 2017). "LU Train reliability" (PDF). Retrieved 5 March 2021.
  15. 1 2 "Four Lines Modernisation". Transport for London. Retrieved 30 April 2023.
  16. 1 2 "THIRD TIME LUCKY FOR SUB-SURFACE RESIGNALLING". Modern Railways . 1 December 2022. Retrieved 30 April 2023.
  17. 1 2 3 "4LM PROGRESS BUT SCOPE CUT". Modern Railways . Retrieved 17 January 2023.
  18. 1 2 3 4 5 "'S' stock making its mark". Modern Railways. London. December 2010. p. 46.
  19. ↑ "Transforming the Tube" (PDF). Transport for London. July 2008. Archived from the original (PDF) on 5 June 2011. Retrieved 28 May 2009.
  20. ↑ "Evacuation system for the Tube presents tight brief for DCA". Product Design + Innovation. 16 December 2010. Archived from the original on 26 May 2015. Retrieved 10 November 2011.
  21. ↑ "London Underground Metropolitan Line S8 Vehicle Stock — Rail Vehicle Accessibility (Non-Interoperable Rail System) Regulations 2010 – Application for Exemption from Schedule 1 Part 1 – Boarding Devices". Department for Transport. 4 August 2010. Retrieved 8 February 2011.
  22. ↑ "Technical Data". Bombardier. Retrieved 4 August 2012.
  23. ↑ Goldstein, Danielle (4 August 2015). "Transported By Design: Vote for your favourite part of London transport". Timeout.com. Retrieved 14 July 2017.
  24. ↑ "London's transport 'Design Icons' announced". London Transport Museum. Archived from the original on 31 March 2016. Retrieved 27 March 2016.
  25. 1 2 3 4 "Metronet Brochure 2005" (PDF). Metronet (British infrastructure company). 2005. Archived from the original (PDF) on 31 October 2006. Retrieved 7 March 2021.
  26. ↑ "Bombardier Wins Transportation Supply Contract Worth $7.9 Billion Cdn for the London Underground in U.K." (Press release). Montreal: Bombardier. 7 April 2003. Retrieved 5 March 2021.
  27. ↑ "Our Plans / Rolling Stock / Rolling out new trains". Metronet. Archived from the original on 24 August 2004. Retrieved 8 March 2021.
  28. 1 2 "Metronet reveals look of future Underground trains". Metronet. 6 December 2006. Archived from the original on 20 October 2007. Retrieved 8 March 2021.
  29. ↑ "TfL Commissioner reveals plans to upgrade Circle, District, Hammersmith and City and Metropolitan lines" (Press release). Transport for London. 6 December 2006. Retrieved 8 March 2021.
  30. ↑ "Metronet calls in administrators". BBC News. 18 July 2007. Retrieved 7 March 2021.
  31. ↑ Wright, Robert (1 April 2008). "Metronet resolves contract dispute" . Financial Times. London. Archived from the original on 11 December 2022. Retrieved 7 March 2020.
  32. ↑ "Metronet's takeover is complete". BBC News. 27 May 2008. Retrieved 7 March 2021.
  33. ↑ "Transport for London unveils new air-conditioned Tube trains" (Press release). Transport for London. 25 September 2008. Retrieved 8 March 2021.
  34. 1 2 "First air-con Tube train arrives as TfL Board approves Business Plan to safeguard critical transport investment" (Press release). Transport for London. 21 October 2009. Retrieved 8 March 2021.
  35. 1 2 3 4 "Saluting the success of S-Stock S7s and S8s". Rail. Peterborough. 2 May 2015. Retrieved 8 March 2021.
  36. 1 2 "TfL's quarterly finance, investment and operational performance reports – Quarter 4 2015/16" (PDF). Greater London Authority . Transport for London. April 2016. Retrieved 8 March 2021. Production of the last of the 192 trains (an additional train was added to the order for the Metropolitan line extension project) in the S-Stock fleet has been completed.
  37. ↑ "MD2170 Metropolitan Line Extension (MLX) – TfL Funding". London City Hall. 10 October 2017. Retrieved 8 March 2021.
  38. ↑ Connor, Piers (12 December 2011). "S Stock Deliveries Suspended" (PDF). Modern Railways. London. Retrieved 10 January 2012.
  39. ↑ Gray, Jenny (9 August 2012). "New handles to be fitted on Met Line trains". Uxbridge Gazette. Retrieved 12 August 2012.
  40. ↑ "A Stock last day on the Metropolitan Line". Railways Today. 26 September 2012. Archived from the original on 19 January 2016. Retrieved 2 November 2012.
  41. ↑ Murray, Dick (21 November 2012). "Half of new Tube fleet sent back to factory for repair work". Evening Standard. London.
  42. ↑ "Modernisation of the District, Metropolitan, Circle and Hammersmith & City lines, and Automatic Train Control Contract" (PDF). Transport for London. 1 July 2015. Archived (PDF) from the original on 27 April 2020. Retrieved 27 April 2020.
  43. ↑ Johnson, Marc (13 December 2012). "First S Stock train runs on Hammersmith & City line". Rail.co. Archived from the original on 16 January 2013. Retrieved 30 December 2012.
  44. ↑ "S Stock trains take to Circle line". Global Rail News. 3 September 2013. Archived from the original on 26 September 2017. Retrieved 3 September 2013.
  45. ↑ "District pips Circle to the post". Modern Railways. Vol. 70, no. 781. October 2013. p. 12.
  46. ↑ "London Underground receives final S Stock train". Railway Gazette International. 24 November 2016. Retrieved 15 May 2021.
  47. ↑ Chandler, Mark (21 April 2017). "Catch the D: Train buffs descend on Tube to catch last old-style D stock District line service". Evening Standard. London. Archived from the original on 26 August 2020. Retrieved 14 July 2017.
  48. ↑ "ATO, a Go-go: Signalling the SSR". London Reconnections. April 2019.
  49. ↑ "Signal passed at danger and subsequent near miss, Chalfont & Latimer station 21 June 2020" (PDF). Rail Accident Investigation Branch. Retrieved 26 July 2021.
  50. ↑ "S Stock information sheet July 2010" (PDF). Transport for London on WhatDoTheyKnow. 27 April 2011. p. 2. Archived from the original (PDF) on 2 February 2017. Retrieved 8 October 2014.
  51. ↑ "Rolling Stock Unit formations and Asset list" (PDF). 29 March 2016.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.