Ключевые слова: asphalt, bricks, city, clear, cleared, close up, closeup, cold, deicing, footway, freezing, frost, frozen, grains, highway, ice, icy, icy road salt, janitor, macro, melt, melting, pathway, pavement, pedestrian, pedway, road surface, safety, salt, salt grains, salting, sand, shoveling, sidewalk, snow storm, sodium chloride, street, temperature, town, track, traffic, transportation, walking, walkway, water, weather, white, winter,