The Train Controller must confirm with the PO that:
the protecting Controlled Absolute Signals have been set at Stop with Blocking
Facilities applied; and/or
all potential Signal Routes available have had Blocking Facilities applied to protect
all entry points to the Worksite;
the Route is Clear of Rail Traffic between the Protecting Signals and the Limits of
the Worksite;
any Rail Traffic between the Protecting Signals and the limits of the ASB Worksite is
contained within a Work on Track Authority; or
any Rail Traffic that has passed Complete beyond the Worksite will not return.
WARNING
When a Work on Track Authority with Rail Traffic is located between the
Protecting Signal and the ASB Worksite, the Train Controller must not
fulfil the Work on Track Authority until:
Rail Traffic is confirmed as clear of Track; or
the ASB has been removed.
Train Controllers must not Authorise movements into the limits of the Worksites where
ASB is in use.