City streets are plowed according to a priority system.
Priority 1 plow routes include arterial streets, highway connections and emergency routes (165.2 km). Within 8 hours of the end of a storm, they have bare pavement on the travel lanes. Two days after a storm, they have bare pavement, curb to curb.
Priority 2 plow routes include major bus routes, schools, community centres, business districts (92.7 km). Within 8 hours after the end of a storm, they have bare pavement on the centre line (the main travel area on the street). Two days after a storm, they have bare pavement on the travel lanes.
Priority 3 plow routes include collector streets, minor bus routes, industrial parks (127.7 km). Within 12 hours of the end of a storm, they have bare pavement on the centre line. Within three days after the storm, they have bare pavement on the travel lanes.
Priority 4 plow routes include local or subdivision streets (286.2 km). Within 12 hours of the end of a storm, they're accessible and could be snow packed. Within four days after a storm, they have bare pavement on the centre line.
2011-2012 Snow Plow Route Map