Canadian Rail Operating Rules (CROR) TC O-0-93 - PDF

40.3 PROTECTION OF TRACK WORK AT AUTOMATIC INTERLOCKING
(a) A movement stopped at the entrance of an automatic interlocking
encountering a “40.3 Protection” visible indicator or a special lock on the box
marked “switches” must not proceed beyond the stop signal until instructions
have been received from the foreman.
Note: Foreman must refer to Rule 840.3.
(b) When track work is still ongoing, a movement authorized by the foreman to
proceed is relieved of the requirements of Rule 611, except that such
movement must be made at RESTRICTED speed to the next signal or Block
End sign.
42. PLANNED PROTECTION
Rule 42 signals must not be in place more than 30 minutes prior to or after the
times stated in the GBO unless provided for in the GBO.
(a) A movement in possession of the Form Y must not proceed beyond the red
signal located at the mileage stated in the GBO, enter the track limits stated in
the GBO, or make a reverse movement within such track limits until
instructions have been received from the foreman named in the GBO. When
a specific track is to be used, instructions from the foreman must specify the
track upon which the instructions apply.
Note: Foreman must refer to Rule 842.
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