2009 2010 JMRI Dick Bronson Bob Jacobsen jake@physics.berkeley.edu 1 2010-01-01 DB Initial version 1.1 2011-06-23 DB Added mapping information 1.2 2014-06-23 ST Added rest of appearances 1.3 2018-06-23 DB Updated for PRR 1956 PRR 1956 Double position light high signal with red lenses As described in the October 1956 version of the PRR publication "Rules for conducting transportation", Signal Rules. Appearances for a high two position light interlocking signal modified with red lenses Clear green dark Page 54 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-281.gif Approach Medium yellow green Page 55 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-282.gif Medium Clear red green Page 56 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-283.gif Medium Approach red flashyellow Page 57 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-283aran.gif Approach Slow yellow yellow Page 58 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-284.gif Approach yellow dark Page 59 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-285.gif Slow Approach red yellow Page 62 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-288r.gif Restricting red red Page 64 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-290r.gif Stop red dark Page 66 ../../../resources/icons/smallschematics/aspects/PRR-1956/PL-2-high/rule-292r.gif Stop Stop Clear Block Clear Medium Clear Clear Clear Medium Clear Restricting Approach Medium Clear Medium Clear Restricting Medium Clear Approach Medium Restricting Medium Approach Approach Medium Restricting Approach Slow Approach Medium Restricting Approach Clear Approach Medium Restricting Slow Clear Approach Slow Restricting Caution Approach Medium Approach Slow Approach Restricting Slow Clear Approach Slow Restricting Slow Approach Approach Slow Restricting Permissive Block Approach Medium Approach Slow Approach Restricting Restricting Approach Medium Approach Slow Approach Restricting Stop and Proceed Approach Medium Approach Slow Approach Restricting Stop Approach Medium Approach Slow Approach Restricting