20092010JMRI GregMcCartney gpmccartney@gmail.com 1 2016-07-28 GM Initial version 2 2019-09-26 GM Removed spaces from folder and icon names. Added permissive to the specific appearances. B&O 1980 Single Arm Semaphore Mast Signal As described in the 1980 version of the Chessie System Operating Rules. Appearances for B&O permissive single arm semaphore mast signals. Clear green Page 128 ../../../resources/icons/smallschematics/aspects/B&O-1980/Semaphore_1_Arm/B-281-1_Arm.gif Approach yellow Page 133 ../../../resources/icons/smallschematics/aspects/B&O-1980/Semaphore_1_Arm/B-285-1_Arm.gif Stop and Proceed red Page 138 Normal speed route appearance ../../../resources/icons/smallschematics/aspects/B&O-1980/Semaphore_1_Arm/B-291-1_Arm.gif Stop and Proceed Stop and Proceed Stop and Proceed Clear Clear Approach Limited Clear Approach Medium Clear Limited Clear Approach Medium Clear Approach Medium Approach Medium Approach Medium Approach Slow Approach Approach Slow Clear Approach Clear Medium Approach Approach Slow Approach Slow Approach Slow Approach Approach Restricting Approach Stop and Proceed Approach Stop and Proceed Medium Approach Stop Approach