Central Line(london Underground)

Discussion in 'Suggestions' started by UnlimitedMagic, Apr 13, 2020.

  1. UnlimitedMagic

    UnlimitedMagic Well-Known Member

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    The central line DOES have a manual mode so before you start saying it doesn’t it does.The central line is a route that goes through London from Epping, Essex in the north east to Ealing Broadway and West Ruislip in the west. The route is 46miles long and is operated using the 1992 stock trains. The line is predominantly double track, widened to three tracks for short sections south of Leytonstone and west of White City; no track is shared with any other line though some sections do parallel other routes. Total track length is 91.4 miles (147.1 km), of which 32.8 miles (52.8 km) is in tunnel; this track is electrified with a four-rail DC system: a central conductor rail is energised at −210 V and a rail outside the running rail at +420 V, giving a potential difference of 630 V.


    History:
    The line opened in 1900 as the Central London Railway crosssing Central London on a East to west axis. After it got extended to Ealing. After the Second World War the Line got extended to the newly built suburbs taking over the steam outer suburban routes into the border of London and beyond to the east.This realised plans that had been delayed by the war, when construction stopped and the unused tunnels were used as air-raid shelters and factories. However, suburban growth proved to be less than expected, and of the planned expansions one (to Denham, Buckinghamshire) was cut short due to its location in the Metropolitan Green Belt and another (to Ongar) ultimately closed in 1994 due to low patronage; the section between Epping and Ongar later became part of the Epping Ontario Railway. The Central line has mostly been operated by automatic train operation since a major refurbishment in the 1990s, although all trains still carry drivers. Many of its stations are of historic interest, from turn-of-the-century Central London Railway buildings in west London to post-war modernist designs on the West Ruislip and Hainault branches, as well as Victorian-era East Counties Railways and Great Eastern Railway buildings east of Stratford, from when the line to Epping was a rural branch line.




    In terms of total passengers, the Central line is the second busiest on the Underground. In 2016/17 over 280 million passenger journeys were recorded on the line. It currently operates the second-most frequent service on the network, with 34 trains per hour (tph) operating for half-an-hour in the westbound direction during the morning peak, and between 27 and 30 tph during the rest of the peak. This makes the Central line the busiest and most intensively-used railway line in the United Kingdom: it is the only Tube line running east–west through the central core of London, running under Oxford Street and the financial centre of the City of London. Crossrail , due to begin most of its core operation in late 2020 or early 2021, will provide interchange with the Central line at Stratford, Liverpool Street , Tottenham Court Road ,Bond Street and Ealing Broadway, relieving overcrowding in these areas.


    1992 stock:

    The 1992 Stock was built by British Rail Engineering Limited (BREL) (under ABB, later Adtranz and now Bombardier Transportation) for the Cental line following extensive testing of the three 1986 tube stock prototype trains.Even so, the introduction of this stock was far from trouble-free and there were many technical teething problems.

    Eighty-five trains were ordered from BREL, each formed of four two-car units (two units have driving cabs, the others are fitted with shunting controls).Upon entering service in April 1993, the new units gradually replaced the previous 1962 tube stock, which was finally withdrawn two years later. The trains were manufactured at the Derby Litchurch Lane Works.

    The propulsion for the trains was manufactured by a consortium of ABB and Brush Traction, and was one of the first examples of microprocessor-controlled traction featuring a fibre-optic network to connect the different control units. The DC traction motors of LT130 type have separately-excited fields and are controlled via GTO (Gate turn-off) thyristors.

    A Wheel Slide Protection (WSP) system was retrofitted due to the fleet suffering an epidemic problem of wheel flats. This was largely due to an excessive number of emergency brake applications caused during the ATO/ATP testing phases.[cititation needed]

    The 1992 stock's design is reminiscent of the 1986 prototypes. The new 2009 stock trains, built by Bombardier Transport for the Victoria Line, are more like the 1992 stock in shape and design than the 1995/1996stock.


    The 1992 stock features both ATO (Automatic Train Operation) and ATP (Automatic Train Protection) which effectively allow the trains to drive themselves. The ATO is responsible for operating the train whilst the ATP detects electronic codes in the track and feeds them to the cab, displaying the target speed limits. This functionality is configured via a switch in the driver's cab which can be set to one of three positions: Automatic, Coded Manual and Restricted Manual.

    In Automatic mode the ATO and ATP are both fully operational. The driver is only required to open and close the doors and press both "Start" buttons when the train is ready to depart. The driver is then tasked with overseeing the operation of the system and can intervene at any time. The ATO controls the train to the desired target speed, whilst the ATP is ready to apply the emergency brakes if the Maximum Safe Speed is exceeded.

    In Coded Manual mode, the ATO is disabled and the driver operates the train manually, however, the ATP is still detecting the codes in the track and restricting the driver's actions. The speedometer on 1992 stock is of the horizontal strip design showing two speeds: the Current Speed in green, indicating the speed at which the train is actually travelling, and the Target Speed indicating the speed at which the train should be travelling. Although the target speed is always active whilst running in Automatic or Coded Manual mode, in the latter mode a change in the target speed is indicated with an upwards or downwards tone depending on whether the target speed is increasing or decreasing. Should the driver exceed the target speed, an alarm sounds and the emergency brakes are automatically applied until the train is below the target speed; the alarm then stops.

    In Restricted Manual mode, the train cannot exceed 18 km/h (11 mph) and the motors automatically cut out at 16 km/h (10 mph). The ATO and ATP are both disabled and the driver operates the train entirely by sight and according to the signals. This mode is used when there has been an ATP or signal failure, or in a depot where ATP is not used, e.g. West Ruislip and Hainault depots. On the main line, driving in ATO is the same for a train driver as driving through a section where signals have failed.
    upload_2020-4-13_18-37-40.jpeg


    upload_2020-4-13_18-39-7.jpeg
    The 1986 stock train prototypes
    The prototypes on the far right won the vote and they started to make the final design hence the 1992 stock


    upload_2020-4-13_18-41-41.jpeg

    upload_2020-4-13_18-44-47.jpeg

     
    Last edited: May 11, 2020
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  2. kiyoko91

    kiyoko91 Well-Known Member

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  3. UnlimitedMagic

    UnlimitedMagic Well-Known Member

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  4. kiyoko91

    kiyoko91 Well-Known Member

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    I'm already proposed this route from last year
     
    Last edited: Apr 15, 2020
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  5. Captaintraincrash

    Captaintraincrash Active Member

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    this is a updated post also does it matter?
     
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  6. samuelbrookes1

    samuelbrookes1 Active Member

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    I think it would be better to have a different London Underground route, because it would get quite boring with the Central Line's ATO.
     
  7. UnlimitedMagic

    UnlimitedMagic Well-Known Member

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    The central line has a Manual mode
     
  8. tallboy7648

    tallboy7648 Well-Known Member

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    Yes but the manual mode only allows you to go 15 mph so it would get boring pretty quick. I would prefer the Sub-surface underground lines before the deep tube lines
     
  9. UnlimitedMagic

    UnlimitedMagic Well-Known Member

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    No that is Restricted Manual Mode
    There is Coded Manual Mode which allows you to run the train normally.
     

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