When do we plow?
We use a coloured route system to determine when we plow each road. Routes are assigned based on the traffic levels and use of the road, and each route has a set trigger that tells us when to plow based on how much snow has accumulated on the road.
During a typical snowfall, here’s when we plow roads:
|Purple||Hills, bridges, overpasses, high hazard locations and hospital access.||Plow within 8 hours of 5 cm accumulation.|
|Red||Major arterial roads||Plow within 72 hours of 8 cm accumulation.|
|Blue||Downtown roads (Snow Zone D)||Plow and remove within 4 days of 10 cm snow pack
(30-40 cm accumulated snowfall).
Plowing happens overnight (7 p.m. to 7 a.m.)
|Green||Collectors, Transit Routes, and residential streets adjacent to schools||Plow and remove within 15 days of a 10 cm snow pack (30-40 cm accumulated snowfall). Learn more.|
|Grey||Residential streets||Plow within 15 days of a 10 cm snow pack (30-40 cm accumulated snowfall); plowed to a 5 cm snow pack and windrows on both sides of the street.|
|Orange||Industrial and commercial areas||Plow within 5 days of a 15 cm snow pack; plowing can start prior to the 15 cm trigger when it makes operational sense to do so.|
What route are you on?
Our Snow and Ice program is guided by the Integrated and Accessible Transportation Policy - 2015 (pdf) .