2009 2014 JMRI Suzie Tall suzie_tall@yahoo.co.uk 1 2014-09-024 ST Initial version 1.01 2016-06-24 ST Corrected spelling in mapping B&O-Semaphore B&O single arm semaphore As described by Joseph Hoevet from 1969 rules Appearances for a single arm permissive semaphore. Clear green Rule 281 ../../../resources/icons/smallschematics/aspects/B&O-Semaphore/SE-1-high/rule-281.gif Approach yellow Rule 285 ../../../resources/icons/smallschematics/aspects/B&O-Semaphore/SE-1-high/rule-285.gif Restricted Proceed red Rule 291 ../../../resources/icons/smallschematics/aspects/B&O-Semaphore/SE-1-high/rule-291.gif Unlit dark ../../../resources/icons/smallschematics/aspects/B&O-Semaphore/SE-1-high/unlit.gif Restricted Proceed Restricted Proceed Restricted Proceed Unlit Clear Clear Restricted Proceed Approach Limited Clear Restricted Proceed Limited Clear Approach Restricted Proceed Approach Medium Clear Restricted Proceed Medium Clear Approach Restricted Proceed Medium Approach Medium Approach Restricted Proceed Medium Approach Slow Approach Restricted Proceed Approach Slow Clear Restricted Proceed Approach Clear Restricted Proceed Medium Approach Approach Restricted Proceed Slow Clear Approach Restricted Proceed Slow Approach Slow Approach Restricted Proceed Slow Approach Approach Restricted Proceed Restricting Approach Restricted Proceed Restricted Proceed Approach Restricted Proceed Stop Approach Restricted Proceed