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

if no red signal is encountered at the location stated in the GBO, the
RTC must be advised.
(ii) A movement that encounters a red signal, outside the times stated in
the Form Y, must stop, unless authorized to proceed on the
instructions received from the foreman named in the GBO. If the
foreman cannot be contacted, the movement must communicate with
the RTC as quickly as possible and be governed by instructions
received.
(iii) A movement that encounters a yellow over red signal or red signal,
without being in possession of a Form Y requiring the placement of
such signal, must stop. A crew member must communicate with the
RTC as quickly as possible and be governed by instructions received.
(iv) If the TGBO/DOB system and the engineering supervisor for the
territory indicate that Rule 42 is not or will not be in effect within the
limits of the signal, the RTC may authorize the movement to resume
normal speed. The engineering supervisor will arrange for removal of
the signals that may include having the crew on a movement pick up
the signals.
(c) A movement within the track limits of a Form Y, at the time such protection
takes effect, must be stopped unless a crew member is otherwise instructed
by the foreman named in the GBO.
(d) In the absence of one or more of the signals prescribed by Rule 43, the
movement will be governed by the requirement of the Form V. Such condition
must be communicated to the RTC as quickly as possible.
(e) A movement that encounters a yellow or green signal without a GBO
requiring the placement of such signal, must reduce speed to ten (10) MPH
and immediately communicate with the RTC. The movement will be governed
by instructions received from the RTC. If the TGBO/DOB system and the
engineering supervisor for the territory indicate that Rule 43 is not or will not
be imminently in effect within the limits of the signal, the RTC may authorize
the movement to resume normal speed. The engineering supervisor will
arrange for removal of the signals that may include having the crew on a
movement pick up the signals.
(f) When a rail break has been detected by an engineering employee and it is
safe to operate over the break at a speed less than posted speed, the RTC
will provide GBO protection to affected movements stating the authorized
speed over the break and how such location is marked in the field, by either a
Rail Break Sign or foreman, at the break. Signals required by Rule 43 will not
be in place.
(g) The regular placement of signals as required by Rule 43 must be utilized after
twenty four (24) hours if the defect is continuing.
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