The Authority for the assisting Rail Traffic to enter the Section from the advance station
is:
on single and double line Automatic Signalling Section, verbal permission from the
Train Controller, and an RRTA; and
on a single line Automatic Signalling Section, if returning to the advance station, the
Half Pilot Key from that Location.
NOTE
During Pilot Key Working the Half Pilot Key will not be available at the
advance station and is not required.