09-16-2009, 10:17 PM
Pennman, Hi ! Knew I'd find this w/o digging through my files - http://www.railroadsignals.us/rulebooks/cr88/cr88.htm - showing the position light signal aspects and indications as adopted by CR from the PRR. Note that some aspects are "automatic" wayside signals, some are "manual-block", and some, interlocking signals. It's really not too hard to find the one(s) you need by checking the indication rules, or picking brains. 
Bob C.
Bob C.
James Thurber - "It is better to know some of the questions than all of the answers."