UCOR was the rulebook I referenced since I understood that was his interest!
Don
From: cpsig@xxxxxxxxxxxxxxx [mailto:cpsig@xxxxxxxxxxxxxxx] On Behalf Of Vic
Sent: November-26-13 8:10 PM
To: cpsig@xxxxxxxxxxxxxxx
Subject: [cpsig] Re: What side of mast for signal target
Posted by: "Don Thomas"thomasd@xxxxxxx donaldmthomas
Date: Mon Nov 25, 2013 10:53 pm ((PST))
Position of the signal lights on either side of the mast does not affect
signal aspects, so long as they are all on the same side. What does matter is
when there are two lights which are staggered. When in this position, two red
lights mean the signal is permissive and indicatse STOP AND PROCEED. When the
lights are aligned vertically then two red lights mean the signal is absolute
and indicates STOP (i.e. stop and stay).