2019 JMRI MarkZiebell cpunclejoe@gmail.com 1 2019-12-21 MKZ Initial version 1.1 2020-06-11 MKZ fix Approach aspect mapping 2 2021-05-31 MKZ fix imagelink directory CCOR-1967 Single head permissive signal http://www.gn-npjointarchive.org/GN_Misc/ccor_1967.pdf Appearances for one-head high-mast permissive block signal Clear green Page 53 ../../../resources/icons/smallschematics/aspects/CCOR-1967/SL-1-high-pbs/rule-240E.gif Advance Approach flashyellow Page 54 ../../../resources/icons/smallschematics/aspects/CCOR-1967/SL-1-high-pbs/rule-240F.gif Approach yellow Page 53 ../../../resources/icons/smallschematics/aspects/CCOR-1967/SL-1-high-pbs/rule-240D.gif Stop and Proceed red Page 53 ../../../resources/icons/smallschematics/aspects/CCOR-1967/SL-1-high-pbs/rule-240B.gif Stop and Proceed Stop and Proceed Clear Clear Advance Approach Clear Advance Approach Alt Clear Approach Diverging Clear Diverging Clear Approach Diverging Clear Alt Approach Diverging Advance Approach Approach Diverging Approach Approach Approach Advance Approach Clear Restricting Approach Restricting Lunar Approach Restricting Lunar Div Approach Flashing Stop and Proceed Div Approach Flashing Stop and Proceed Approach Stop and Proceed Approach Stop Approach