20092010JMRI DickBronson dick@rr-cirkits.com BobJacobsen jake@physics.berkeley.edu 1 2010-01-01 DB Initial version 1.01 2010-01-17 DB Typo correction 1.1 2011-06-24 DB Added mapping information B&O 1957 Single position light high permissive signal As described in the August 1946 version of the AAR publication "American Railway Signaling Principles and Practices", chapter II. Appearances for single position light signal head with marker light or number plate. Clear green Page 55 ../../../resources/icons/smallschematics/aspects/AAR-1946/PL-1-high-pbs/rule-281.gif Approach yellow Page 55 ../../../resources/icons/smallschematics/aspects/AAR-1946/PL-1-high-pbs/rule-285.gif Permissive lunar Page 55 ../../../resources/icons/smallschematics/aspects/AAR-1946/PL-1-high-pbs/rule-289.gif Stop and Proceed red Page 55 ../../../resources/icons/smallschematics/aspects/AAR-1946/PL-1-high-pbs/rule-291.gif Stop and Proceed Stop and Proceed Clear Clear Approach Medium Clear Advance Approach Clear Medium Clear Clear Approach Clear Slow Clear Clear Slow Approach Clear Permissive Approach Restricting Approach Stop and Proceed Approach Stop Approach