Rail Traffic Crew must be advised about a TSR by TSR signs, and:
the issue of a Special Notice; or
the issue of a Condition Affecting the Network (CAN) warning.
If it is not possible to place TSR signs immediately, Rail Traffic Crew must be given
written or verbal advice of the TSR, before they enter the affected Section of Track.
TSR signs must be placed as soon as practical after the Speed Restriction is imposed.
Rail Traffic Crew must keep the advice for the duration of the journey.