2009 2010 2013 JMRI James Koretsky Ken Cameron 1 2012-08-31 JK Initial version 1.1 2012-11-06 KSC Added basic aspect mappings 1.2 2013-12-29 ST Split into different mast types and completed mapping BN-1989 Double head searchlight signal with Lunar As described in the October 1989 Burlington Northern Railroad Southern Region, Nebraska Division Timetable #2. In effect at 0001 Continental Mountain Time, Sunday October 29, 1989. Appearances for a double head searchlight signal mast used in Automatic Block, CTC and Interlocking Systems Clear green dark Rule 230 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-230-b.gif Advance Approach yellow green Rule 232 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-232.gif Approach Diverging yellow yellow Rule 233 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-233.gif Approach Medium flashyellow dark Rule 234 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-234-b.gif Approach Restricting yellow lunar Rule 235 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-235.gif Approach yellow dark Rule 236 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-236-b.gif Diverging Clear red green Rule 237 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-237.gif Diverging Approach Medium red flashyellow Rule 238 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-238.gif Diverging Approach red yellow Rule 239 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-239.gif Restricted Proceed red lunar Rule 241 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-241-d.gif Stop red dark Rule 242 ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/rule-242-b.gif Unlit dark dark - ../../../resources/icons/smallschematics/aspects/BN-1989/SL-2-high/unlit.gif Restricted Proceed Restricted Proceed Stop Unlit Clear Clear Diverging Clear Advance Approach Clear Diverging Clear Approach Diverging Clear Diverging Clear Approach Medium Clear Diverging Clear Approach Restricting Clear Diverging Clear Approach Approach Medium Diverging Approach Medium Diverging Clear Approach Diverging Diverging Clear Diverging Approach Medium Approach Diverging Diverging Clear Diverging Approach Approach Medium Diverging Approach Medium Restricted Proceed Approach Restricting Diverging Approach Stop Approach Diverging Approach Unlit Approach Diverging Approach