2009 2010 2020 JMRI Dick Bronson Bob Jacobsen jake@physics.berkeley.edu 2.2 2016-04-01 MST Add low appearances 2.3 2016-05-05 MST Add Held and Dark specific appearances 2.4 2020-08-21 GPM Fixed mappings to allow Diverging Approach or Diverging Clear on a diverging route when the next signal is displaying Diverging Clear or Diverging Approach. basic Double searchlight low signal (similar to basic signals described in various magazine articles) A two-headed signal for use at e.g. entrances to sidings Clear green red ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-low/rule-287.gif Approach yellow red ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-low/rule-288.gif Stop red red ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-low/rule-292.gif Diverging Clear red green ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-low/rule-283.gif Diverging Approach red yellow ../../../resources/icons/smallschematics/aspects/AAR-1946/SL-2-low/rule-290.gif Unlit dark dark ../../../resources/icons/smallschematics/searchlights/two-low-dark.gif Stop Stop ../../../resources/icons/smallschematics/searchlights/two-low-held.gif Unlit Stop Approach Diverging Approach Approach Clear Diverging Clear Diverging Approach Clear Diverging Clear Clear Clear Diverging Clear Diverging Clear Clear Diverging Clear