SSR resignalling

Discussion in 'London Underground' started by Dstock7080, 22 Jun 2018.

  1. Dstock7080

    Dstock7080 Established Member

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    The first section of the long awaited SSR resignalling, Thales CBTC Signal Migration Area 0.5 from Hammersmith-Latimer Road goes live with the first trains tomorrow morning.
    Hammersmith signal cabin (OZ) will close after the last train tonight. >insert tears from bluegoblin7<

    A normal weekend timetable will operate but trains will initially run empty from Paddington-Hammersmith until passenger approval is gained, hopefully sometime on Sunday.

    The contract was signed on 3 August 2015:
    http://www.railwaygazette.com/news/...-sub-surface-lines-resignalling-contract.html

    Maximum line speed will be increased to 50mph in this section, from the previous 35-40mph. Restrictions obviously remain on certain infrastructure and pointwork.
     
    Last edited: 22 Jun 2018
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  3. Dstock7080

    Dstock7080 Established Member

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    Unfortunately things haven’t gone well today!
    So a return to legacy signalling tonight, passenger operation remains with green signals!
     
  4. rebmcr

    rebmcr Established Member

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    Oh, that is bad news indeed. :(

    Are you able to post any further detail?
     
  5. bluegoblin7

    bluegoblin7 Member

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    No it isnt! :lol:
     
  6. Dstock7080

    Dstock7080 Established Member

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    Some trains that were presented at the boundary point were not fitted with CBTC equipment or were fitted but the VOBC (Vehicle On Board Computer) failed to respond and on some occasions drivers requested an Instructor to help them through the area, all leading to delays of over 60mins for a journey to Hammersmith and back.

    Passenger operation Hammersmith-Paddington will resume in the morning, using legacy signalling and Hammersmith signal cabin will reopen!
     
    Last edited: 23 Jun 2018
  7. bluegoblin7

    bluegoblin7 Member

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    No non-VOBC trains were meant to make it down (we reformed the last one off about 0600) but there were lots of problems changing over, some train borne and others with the track tags relating to the system. Combined with the decision to reinstate legacy signalling one non-VOBC train did make it down just before the service was suspended. It was a good opportunity to test the procedure!

    Hammersmith cabin will re-open exactly 57 years after it first opened...!
     
    Last edited: 23 Jun 2018
  8. jamesst

    jamesst Member

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    What's the latest with the Ssr resignalling? Was it fixed in the end?
     
  9. Dstock7080

    Dstock7080 Established Member

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    Another try is going to be made this coming weekend 21-22 July.
     
  10. rebmcr

    rebmcr Established Member

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    Presumably the same plan — ghost running + RRBs for only as long as necessary?
     
  11. bluegoblin7

    bluegoblin7 Member

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    This weekend has been downgraded to system testing on the branch, as well as a larger shut down into the City. There are no plans to launch the signalling into revenue service.

    The shutdown will span the whole weekend and will not be lifted early. Rail replacement buses have not been provided for any shut downs on the Hammersmith road for some time now.
     
  12. Mag_seven

    Mag_seven Established Member

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    What's the latest on this? (was thinking of having a trip along from Padd to Hammersmith tomorrow to check it out)
     
  13. bluegoblin7

    bluegoblin7 Member

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    Still conventional signalling across the entire SSR.

    The weekend of September 22/23 is still pencilled in for the next attempt, although there are rumours that it may be pushed back again (I've been off sick recently so I don't know how substantiated they are).
     
  14. Mag_seven

    Mag_seven Established Member

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    Thanks for the quick response. Sounds like its developing into a bit of a saga!
     
  15. axlrosen

    axlrosen Member

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    Will there be more trains per hour once it’s done?
     
  16. Dstock7080

    Dstock7080 Established Member

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    Yes, once fully implemented the peak pattern should be:
    Ealing-Upminster 8tph
    Richmond-Upminster 8tph
    Wimbledon-Barking 8tph
    Wimbledon-Edgware Rd 8tph
    Circle from Hammersmith/Edgware Rd 8tph
    Hammersmith & City 8tph
    Uxbridge 12tph
    Watford 10tph
    Amersham 4tph
    Chesham 2tph
    this would give:
    32tph Baker Street-Liverpool Street
    32tph Gloucester Road-Tower Hill.
    Other uplift will be introduced after the Circle Line is completed, and then as major sections are finished.
     
  17. axlrosen

    axlrosen Member

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    Thanks! Let me ask the very specific question that I’m personally interested in: How many trains are there from Hammersmith to Baker St (and beyond) now, and in the future? And when is the future expected to be?
     
  18. Dstock7080

    Dstock7080 Established Member

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    Currently there are 12tph Hammersmith-Baker Street, this will rise (as shown above) to 16tph in the peak.
    15tph is likely after SMA 6 (Signalling Migration Area 6, Stepney Green-Becontree) has been completed, currently around August/September 2019.
    16tph will be available once SMA 9 is converted, around September 2020.
     
  19. rebmcr

    rebmcr Established Member

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    For the benefit of other readers, here's an excerpt from this TfL PDF where I found a diagram. SSR SMAs.PNG
     
  20. LU_timetabler

    LU_timetabler Member

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    They think part of the problem with the new signalling has been trains "appearing"/starting in the morning at Hammersmith depot. To avoid this, the next attempt will outstable all of Hammersmith depot's trains and introduce them to the line from the Edgware Road end, it is hoped that this will overcome some of the problems.
     
  21. DavyCrocket

    DavyCrocket Member

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    And how would this work on the next day and the day after?
    Can all the trains that come from Hammersmith depot always come from Edgware Road?
     
  22. LU_timetabler

    LU_timetabler Member

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    Once they are introduced correctly the computer can continue with them, enabling them to stable and restart from Hammersmith.
     
  23. DavyCrocket

    DavyCrocket Member

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    But then in the morning they will have to be re inputted in to the computer? What you say doesn’t make sense.
    And what about the other depots.
     
  24. LU_timetabler

    LU_timetabler Member

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    No, then the next morning the computer knows where they are from the night before!
     
  25. DavyCrocket

    DavyCrocket Member

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    But on the next day, the train will be a different number so would have to be launched as a new train.
     
  26. rebmcr

    rebmcr Established Member

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    Do you have internal knowledge of how the Thales system works?
     
  27. bluegoblin7

    bluegoblin7 Member

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    There are far more pressing and complex issues than just this, I can assure you.
     
  28. DavyCrocket

    DavyCrocket Member

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    Absolutely.
     
  29. jamesst

    jamesst Member

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    So is the new signalling up and running yet?
     
  30. Dstock7080

    Dstock7080 Established Member

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    The first section from Hammersmith-Latimer Road has been rescheduled for 17/18 November.
     
  31. bluegoblin7

    bluegoblin7 Member

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    ...for now. (I'm on annual leave, *dances a dance*)
     

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