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 1.2 2018-06-23 DB Updated for PRR 1956 1.3 2019-02-02 DB Typo correction Rule 285a PRR 1956 Single position light high permissive signal As described in the October 1956 version of the PRR publication "Rules for conducting transportation", Signal Rules. Appearances for single position light signal head with marker light or number plate. Clear green Page 54 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-1-high-pbs/rule-281.gif Approach yellow Page 59 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-1-high-pbs/rule-285.gif Caution lunar Page 60 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-1-high-pbs/rule-285a.gif Stop and Proceed red Page 65 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-1-high-pbs/rule-291.gif Stop and Proceed Stop and Proceed Clear Block Clear Clear Clear Approach Medium Clear Medium Clear Clear Medium Approach Clear Approach Slow Clear Approach Clear Caution Clear Slow Clear Clear Slow Approach Clear Permissive Block Approach Restricting Approach Stop and Proceed Approach Stop Approach