AOCL crossing questions

Discussion in 'Infrastructure & Stations' started by hornbyfan99, 8 May 2015.

Thread Status:
Not open for further replies.
  1. hornbyfan99

    hornbyfan99 Member

    Messages:
    35
    Joined:
    5 May 2015
    How come mainline AOCLs now have the speed sign as as St Andrews cross with speed underneath than having the combined speed and whistle board?

    I also want to know when the AOCLs were commisioned on the WSR

    Finally as the Cambrian line is ERTMS signalled is there a need for the white light indicator and the speed signs?
     
  2. edwin_m

    edwin_m Established Member

    Messages:
    10,977
    Joined:
    21 Apr 2013
    Location:
    Nottingham
    I think the St Andrews Cross means the speed restriction only applies until the front of the train reaches the crossing, unlike other speed restrictions which must be obeyed until the tail of the train has left the restriction.

    Cambrian AOCLs aren't integrated with the ERTMS system so the driver needs a separate confirmation they are working. See this accident report:

    https://www.gov.uk/raib-reports/inc...r-crossing-locally-monitored-near-aberystwyth
     
Thread Status:
Not open for further replies.

Share This Page