Ключевые слова: alert, attention, background, blue, car, circle, circular, city, communication, concept, construction, danger, design, forbidden, graphic, icon, illustration, isolated, law, limit, message, metal, no, not, park, parking, pole, prohibit, prohibited, prohibition, red, restriction, road, roadsign, round, safety, shiny, sign, signage, signal, sky, street, symbol, traffic, transportation, travel, warning, white, work,