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

(b) Movements must comply with the provisions of Rule 105(c) within cautionary
limits.
(c) Each cautionary limit sign and advance sign will be reflectorized. An advance
sign will be placed at least one mile in advance of each cautionary limit sign.
At locations where the placement of an advance sign or signs is not
practicable at the required distance, it will be so indicated in special
instructions.
94.1 ADDITIONAL RESTRICTIONS IN CAUTIONARY LIMITS
Unless otherwise specified in special instructions, in the application of Rule 105
(c) as required by Rule 94, a movement must also be prepared to stop short of a
switch not properly lined.
At a location where Rule 40.2 is applicable, a movement must also be prepared
to stop short of a red flag or red light.
101. PROTECTION AGAINST EXTRAORDINARY CONDITIONS
(a) A movement must be fully protected against any known or suspected
condition that may interfere with its safe passage.
(b) A movement must stop at once and be fully inspected when it is known or
suspected to have struck any object that may interfere with its safe operation.
The RTC must be notified as quickly as possible.
(c) When a portion of a movement is left on the main track, precautions must be
taken by the crew to protect the remaining portion against the return move.
(d) Protecting wide traffic - When the dimensions of traffic require that special
arrangements be made to permit moving past other trains and transfers, the
wide traffic will be protected by the RTC against other main track movements.
Advice of such protection will be provided to the crew in writing or verbally.
Example: “ 5748 West with wide traffic will be protected by the RTC against
other main track movements between Zephyr and Aurora.”
The RTC must, by the use of signal blocking devices, clearances or other
control methods, prevent other movements from occupying main tracks
adjacent to the track upon which the wide traffic is being handled.
The RTC will not provide protection against equipment on non-main tracks.
The crew handling the wide traffic must protect it from such equipment.
101.2 EQUIPMENT LEFT ON MAIN TRACK
Equipment may be left on the main track under the following conditions:
(i) when protected by clearance;
(ii) when protection has been provided by Form T; or
(iii) when protected by cautionary limits.
Communication to the RTC must include the location of the equipment and the
outer limits of the Form T protection must be expressed in whole miles or by
other identifiable location. In CTC and controlled interlockings, once the RTC
has been advised, Form T protection need not be provided. The RTC must
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