Abstract
Snowfalls and blizzards block roads and create massive congestion on city streets and long-distance routes. Considering the processes of road surface formation during snowfall, it can be noted that snow during the fall is light fluffs, which, at an indefinite time, with different intensities, at different temperatures, stacked in layers, gradually by the wheels of cars, are compacted into a slippery tuberous canvas. The rubber tread, rolling through the freshly deposited layers, compresses the snow, forming a rut. The resulting trail adheres firmly to the asphalt. Almost all cars go on the trail, therefore the wheels of the following cars condense mainly the same track. On inactive roads, leaving the track during overtaking or detour leads to smoothing and compaction of the freezing walls of the track.