20092010JMRI GregMcCartney gpmccartney@gmail.com 1 2015-10-19 GPM Initial version of the signal set. 2 2016-01-26 GPM Corrected the aspect mapping to eliminate aspects not possible on this signal. 3 2019-12-30 BM Add missing 'Not Lit' aspect N&W 1981 CPL Single Arm Permissive Signal As described in the 1981 version of the Norfolk and Western Railroad Operating Rules. Appearances for N&W permissive CPL mast signals Clear green Page 60 ../../../resources/icons/smallschematics/aspects/NW-1981/NW-CPL-1arm-permissive/rule-281.gif Approach yellow Page 63 ../../../resources/icons/smallschematics/aspects/NW-1981/NW-CPL-1arm-permissive/rule-285.gif Stop and Proceed red Page 66 ../../../resources/icons/smallschematics/aspects/NW-1981/NW-CPL-1arm-permissive/rule-291.gif Not Lit dark ../../../resources/icons/smallschematics/aspects/NW-1981/NW-CPL-1arm-permissive/notlit.gif Stop and Proceed Stop and Proceed Not Lit ../../../resources/icons/smallschematics/aspects/NW-1981/NW-CPL-1arm-permissive/notlit.gif Clear Clear Approach Diverging Clear Advance Approach Clear Diverging Clear Approach Diverging Approach Diverging Approach Approach Clear Diverging Approach Approach Slow Clear Approach Slow Approach Approach Restricting Approach Stop and Proceed Approach Stop and Stay Approach