Special signal at east end of Cartier yard. Timetable describes it’s indications:

“Lights located on the lead East end Cartier yard convey the following information:
RED – train approaching yard. Movements being made on lead track will move clear of track in which train is to be yarded.
YELLOW – Departing train may proceed to leaving signal. (The dwarf signal giving access to the main track).”

July 2022