Under what conditions are winter tires mandatory in Nova Scotia?

Winter tires are mandatory in Nova Scotia from December 15 to April 30 because this period encompasses the coldest months when winter weather, including snow and ice, is most likely to occur. Using winter tires during this timeframe is critical for ensuring better grip, traction, and handling on slippery roads, which enhances safety for drivers and passengers.

The other periods mentioned may not necessarily reflect the consistent winter weather conditions that are typically expected during the designated mandatory period. For instance, having winter tires from January to March might not account for earlier winter conditions that can begin in late fall, while the option that states 'whenever it snows' lacks the practicality of a defined timeframe that aids in driver compliance and preparedness for seasonal driving conditions. Thus, the established dates provide a clear guideline for when drivers should equip their vehicles with appropriate tires to maintain safety on the roads.