20092010JMRI DickBronson BobJacobsen jake@physics.berkeley.edu 1 2009-12-27 DB More appearances 1.1 2010-01-01 RGJ Add author and revision info 1.2 2010-01-11 DB Typo Correction 2.2 2011-06-23 DB Added mapping information 2.3 2019-12-30 BM Remove ourAspect values which are not supported by this mast type B&O 1957 Double searchlight high permissive signal As described in the August 1946 version of the AAR publication "American Railway Signaling Principles and Practices", chapter II. Appearances for a two-searchlight signal head with number plate Clear green red Page 42 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-281.gif Advance Approach Medium green yellow Page 42 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-281A.gif Approach Medium yellow green Page 44 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-282.gif Advance Approach yellow yellow Page 44 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-282A.gif Medium Clear red green Page 45 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-283.gif Approach yellow red Page 47 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-285.gif Restricting red yellow Page 49 B ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-290.gif Stop and Proceed red red Page 50 A ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-high-pbs/rule-291.gif Stop and Proceed Stop and Proceed Clear Clear Medium Clear Advance Approach Medium Clear Medium Clear Approach Limited Clear Medium Clear Limited Clear Advance Approach Medium Approach Medium Approach Medium Advance Approach Clear Medium Clear Approach Medium Medium Clear Approach Medium Approach Medium Advance Approach Advance Approach Approach Medium Approach Medium Approach Slow Approach Medium Approach Approach Slow Approach Medium Approach Approach Advance Approach Approach Medium Approach Medium Approach Advance Approach Approach Medium Approach Slow Clear Approach Restricting Approach Stop Approach