Block and Interlocking Signals

The following signals will appear where conditions require their use. These illustrations give standard indications. Other indications will be shown in special instructions. Lights may be to either side of signal mast, and number plates may be provided for the purpose of identifying location.

Rule	Name	Indication
281	Clear Signal	Proceed.
282	Approach Medium Signal	Proceed, approaching next signal at medium speed.
282A	Approach Limited Signal	Proceed, approaching next signal at limited speed.
283	Medium Clear Signal	Proceed, medium speed within interlocking limits or through turnouts.
283A	Limited Clear Signal	Proceed, limited speed within interlocking limits or through turnouts.
284	Approach Slow Signal	Proceed, approaching next signal at slow speed. Trains exceeding medium speed must at once reduce to that speed.
285	Approach Signal	Proceed, preparing to stop at next signal. Trains exceeding medium speed must at once reduce to that speed. Reduction to medium speed must commence before passing signal.
286	Medium Approach Signal	Proceed at medium speed preparing to stop at next signal.
286A	Limited Approach Signal	Proceed at limited speed preparing to stop at next signal.
287	Slow Clear Signal	Proceed, slow speed through interlocking limits or through turnouts.
288	Slow Approach Signal	Proceed, preparing to stop at next signal. Slow speed through interlocking limits or through turnouts, medium speed must then not be exceeded until a more favourable indication has been accepted.
290	Restricting Signal	Proceed at restricted speed.
291	Stop and Proceed Signal	Stop, then proceed at restricted speed.
291A	Grade Signal	Trains handling fifty percent or more of ruling grade tonnage approaching a grade signal indicating “Stop, then proceed at restricted speed” may pass it without stopping and proceed at restricted speed.
291B	Station Protection Signal	Stop, then proceed at restricted speed and preceeded by a flagman when necessary to ensure full protection.
292	Stop Signal	Stop
293	Take (or leave) siding signal	Be governed by signal indication. Take (or leave) siding when “S” lighted or light flashing.

There are many things our club does well, but creating numerous, frequent, and up-to-date layout videos for the WRMRC YouTube channel isn’t one of those. However, the recent Waterloo Railway Expo did coax us to do some new filming, so our club’s display there could present this video showing some of the newer scenic areas and latest structures on the layout.

This video follows CP manifest freight #911 along the current active section of the layout between Stinson siding on the Cartier Sub, and the hidden Webbwood staging yard at the end of the Webbwood Sub. The recording was done over the middle of August 2026, just days before the Expo.

This isn’t the slickest and most professional model train video, but it does give you a contemporary look at the CP Sudbury Division layout in 2026.

For your viewing pleasure we present:- “Following 911 Over the CP Sudbury Division”

Waterloo Region Model Railway Club

Modeling CP Rail's Sudbury Division in the 1970s

1962 Uniform Code of Operating Rules – Block and Interlocking Signals

Block and Interlocking Signals

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Following CP#911 Video