Between November 15 to April 1, there is no on-street parking between 1 a.m. and 7 a.m. when Environment Canada forecasts 7 cm or more of snow in the Ottawa area. This includes any forecast for a range of snow more than 7 cm, such as 5 to 10 cm.
Vehicles without a residential parking permit that are parked on the street during an overnight parking ban will be ticketed and towed.
When an overnight winter parking ban is made, the City issues a special advisory to the local media and posts it on ottawa.ca. The parking ban ends when snow clearing is completed and the City issues an advisory indicating that it has been lifted.