2010 2016 JMRI Suzie Tall suzie_tall@yahoo.co.uk 1.0 2016-12-02 ST Initial Version 2 2020-03-05 GM Initial version of the 1980 C&O Signal rules. This set was created by back dating the CSX-2014-Chessie rule set created by Suzi Tall. Back dating required removal of some aspects and altering the mapping to compensate for their removal. While based on the 1980 rule book, they are the same rules that were in affect in 1969. C&O 1980 Single head dwarf signal - YGR As described in the 1980 version of the Chessie System Operating Rules "Signal Rules - 281-292". Appearances for a absolute single head dwarf mast with no markings Slow Clear green Rule 287 ../../../resources/icons/smallschematics/aspects/CSX-2014-Chessie/CO-3-lo/rule-C1287.gif Restricting yellow Rule 290 ../../../resources/icons/smallschematics/aspects/CSX-2014-Chessie/CO-3-lo/rule-C1290.gif Stop red Rule 292 ../../../resources/icons/smallschematics/aspects/CSX-2014-Chessie/CO-3-lo/rule-C1292.gif Unlit dark - ../../../resources/icons/smallschematics/aspects/CSX-2014-Chessie/CO-3-lo/CO-3-lo.gif Stop Restricting Stop Unlit Clear Slow Clear Restricting Approach Medium Slow Clear Restricting Medium Clear Restricting Medium Approach Slow Restricting Approach Slow Slow Clear Restricting Approach Slow Clear Restricting Medium Approach Restricting Slow Clear Restricting Slow Approach Restricting Restricting Restricting Restricted Proceed Restricting Stop Restricting Unlit Stop