2010 JMRI Dick Bronson dick@rr-cirkits.com Bob Jacobsen jake@physics.berkeley.edu Suzie Tall suzie_tall@yahoo.co.uk 1 2010-01-27 DB Initial version 1.30 2015-05-12 ST Added aspect mapping SPTCO-1960 Single head dwarf signal - D As described in the July 1960 version of the "Rules and Regulations of the Transportation Department". Appearances for a one-searchlight dwarf signal head with number plate bearing prefix D Block Signal Green green Page 90 G ../../../resources/icons/smallschematics/aspects/SPTCO-1960/SL-1-low-D/rule-281.gif Approach Medium - Flashing Yellow flashyellow Page 95 D ../../../resources/icons/smallschematics/aspects/SPTCO-1960/SL-1-low-D/rule-285A.gif Distant Signal Yellow yellow Page 96 B ../../../resources/icons/smallschematics/aspects/SPTCO-1960/SL-1-low-D/rule-286.gif Block Signal Green Block Signal Green Block Signal Green for Main Route Block Signal Green Block Signal Green for Diverging Route Distant Signal Yellow Block Signal Yellow over Green Approach Medium - Flashing Yellow Approach Signal Yellow Approach Medium - Flashing Yellow Approach Medium - Flashing Yellow Block Signal Green Distant Signal Yellow Approach Medium - Flashing Yellow Grade Signal Red Distant Signal Yellow Home Signal Yellow for Diverging Route Distant Signal Yellow Home Signal Red over Lunar Distant Signal Yellow Home Signal Red Distant Signal Yellow Flashing Yellow Distant Signal Yellow Flashing White Distant Signal Yellow Home Signal Red, with Triangular Plate Distant Signal Yellow