Priority sidewalks are marked with red lines ,multi-use trails with green lines, on the map below to indicate which areas will be plowed by the City of Mississauga when snowfalls exceed 8cm (3 inches). A priority sidewalk or priority multi-use trail is defined as being located on a major road or bus route or accessing hospitals, schools and nursing homes. We are counting on you to: Clear snow and ice from sidewalks as soon as possible after a snowfall to ensure that they are safe for all residents Help others, especially seniors and disabled persons to clear their driveways and sidewalks. .