Ключевые слова: america, background, canada, closeup, concrete, copy space, danger, design, environment, glaze ice, handrail, humidity, ice, ice slick, iced, icing, icy, janitor, ladder, light, maid, maintenance, missing, no people, nobody, north america, note, old, part, party, pedestrian, plowing, problem, safety, season, slippery, snow, snow clearing, snow covered, spring, stairs, step, stone, street, track, trail, urban, white, winter,