Probability of a Car Crash in Snow or Ice

Snow and icy pavement are responsible for approximately 17% of all weather-related vehicle crashes in the United States, accounting for about 156,000 crashes, 900 deaths, and 76,000 injuries annually, according to the Federal Highway Administration. Icy pavement is particularly dangerous, contributing disproportionately to fatal crashes relative to the amount of time roads are icy.

Black ice is especially hazardous because it is nearly invisible to drivers. Bridges and overpasses freeze first because they are exposed to cold air on all sides. The first snowfall of the season tends to have higher crash rates because drivers have not yet readjusted to winter driving conditions. Four-wheel drive helps with acceleration but does not improve braking distance on ice.

Winter driving safety involves reducing speed significantly (by at least 30-50% on snow-covered roads), increasing following distance to 8-10 seconds, using winter tires (which reduce stopping distance by 25-50% compared to all-season tires), avoiding sudden braking or steering, clearing all snow and ice from the vehicle before driving, and carrying an emergency kit. Anti-lock braking systems (ABS) help maintain steering control during hard braking on slippery surfaces.