20092010JMRI DickBronson BobJacobsen jake@physics.berkeley.edu 1 2009-12-21 RGJ Initial version 1.1 2009-12-27 DB, RGJ Fix consistency, more aspects 2 2010-01-01 DB More appearances 2.1 2010-01-01 RGJ Add author and revision info 2.2 2011-06-24 DB Added mapping information AAR-2 Single head dwarf signal As described in the August 1946 version of the AAR publication "American Railway Signaling Principles and Practices", chapter II. Appearances for a one-searchlight dwarf signal head without other badging Slow Clear green Page 48 C ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-1-low/rule-287.gif Restricting yellow Page 49 D ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-1-low/rule-290.gif Stop red Page 50 E ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-1-low/rule-292.gif Stop Stop Clear Slow Clear Advance Approach Medium Slow Clear Approach Limited Slow Clear Limited Clear Slow Clear Approach Medium Slow Clear Advance Approach Slow Clear Medium Clear Slow Clear Medium Advance Approach Slow Clear Medium Approach Slow Slow Clear Approach Slow Slow Clear Approach Restricting Medium Approach Restricting Slow Clear Slow Clear Restricting Restricting Stop Restricting