For reasons for safety, the city prioritizes snow clearing and snow removal on primary streets and streets (or parts of streets) near public safety buildings (police, fire, hospitals, etc.), schools, and municipal buildings. Once the snow is cleared from these main areas, work begins on secondary streets and then on tertiary streets.
Primary streets are the main roads that have the most traffic, including Côte Saint-Luc Rd., Cavendish Blvd., Fleet Rd., Westminster Ave., Kildare Rd., Mackle Rd., and Guelph Rd. Secondary streets are collector roads that have higher through traffic or high-density buildings, such as Merton Rd., Parkhaven Ave., and others. Tertiary streets are typically smaller roads with limited and non-through traffic.