STM will avoid COP15 perimeter

STM buses will have to skirt around the COP15 security perimeter and this is starting next week, even though the event itself only runs from December 7‑19.

A chunk of lower downtown (map’s in the article) will be off limits to transit, and as of December 1st, Place‑d’Armes station will also be closed, and will be bypassed by trains. STM page.