846. MOUNTING OF SIGNALS
(a) Signals displayed for protection of impassable or slow track must
provide an unobstructed view of them as seen by the crew of an
approaching movement.
They will be of the prescribed color, size and shape.
(b) When a day signal cannot be plainly seen, each flag must be
reflectorized or equipped with a reflectorized lens, target or disc, or
a reflectorized sign may be used instead. In the application of Rules
840.1 and 840.2, the required light must be displayed.
(c) Red, yellow, and yellow-over-red flags may display those colors
only in the direction of an affected approaching movement. Green
flags must display that colour in both directions.
MRH-Dec 2014
