Ключевые слова: air, blocade, circle, city, climate, concrete, danger, environment, environmental, exit, fire, fire exit, fog, forbidden, hazard, health, houses, industrial, industry, information, law, light, no, no parking, notice, outside, parking, prohibition, proscription, protection, road, roostler, running, safety, save, sign, smog, speed, symbol, traffic, transportation, urban, wall, warning, white,