In-Field Protection is a Rail Clamped Stop Sign and Rail Clamped Worksite Limit Sign:
In-Field Protection is not required between the Worksites and the end of a Terminal
Line if the Train Controller tells the PPO that there are no planned Rail Traffic
movements from that direction; and
where Rail Traffic that is Stabled and not associated with the LPA is within the limits
of the LPA, the PPO must place In-Field Protection at all points of entry relevant to
the LPA.
Where the In-field protection is a Rail Clamped Stop Sign the Protection can be placed
at:
that Protecting Signal;
200m from the outermost Worksites; or
the Station Limits sign.
Where a Departure Signal is the Protecting Signal, the PPO must also take possession
of the Half Pilot Key.