2009 Edition Chapter 9D. Signals
01 Part 4 contains information regarding signal warrants and other requirements relating to signal installations.
01 At installations where visibility-limited signal faces are used, signal faces shall be adjusted so bicyclists for whom the indications are intended can see the signal indications. If the visibility-limited signal faces cannot be aimed to serve the bicyclist, then separate signal faces shall be provided for the bicyclist.