20092010JMRI GregMcCartney gpmccartney@gmail.com 1 2017-03-16 GPM Original Edition SOU 1981 1 Arm CL Permissive Mast Signal As described in the 1981 version of the Southern Railway Signal Rules. Appearances for 1 arm color light permissive mast signals Clear green ../../../resources/icons/smallschematics/aspects/SOU-1981/SOU-CL-1-Arm-high-permissive/rule-301.gif Approach Slow flashyellow ../../../resources/icons/smallschematics/aspects/SOU-1981/SOU-CL-1-Arm-high-permissive/rule-306.gif Approach yellow ../../../resources/icons/smallschematics/aspects/SOU-1981/SOU-CL-1-Arm-high-permissive/rule-307.gif Restricted Proceed red ../../../resources/icons/smallschematics/aspects/SOU-1981/SOU-CL-1-Arm-high-permissive/rule-309.gif Restricted Proceed Restricted Proceed Restricted Proceed Clear Clear Restricted Proceed Approach Diverging Clear Restricted Proceed Advance Approach Clear Restricted Proceed Diverging Route Clear (Medium) Approach Restricted Proceed Diverging Route Clear (Slow) Approach Slow Restricted Proceed Approach Slow Clear Restricted Proceed Diverging Route Approach Slow (Medium) Approach Restricted Proceed Diverging Route Approach Slow (Slow) Approach Slow Restricted Proceed Approach Clear Restricted Proceed Diverging Route Approach (Medium) Approach Restricted Proceed Diverging Route Approach (Slow) Approach Slow Restricted Proceed Restricted Proceed Approach Restricted Proceed Stop Approach Restricted Proceed