Ключевые слова: 30, background, black, blue, careful, caution, city, clouds, condo, drive, europe, fast, highway, hour, house, law, limit, maximum, metal, mile, mph, nobody, number, post, red, regulation, restrict, restriction, road, roadsign, round, rule, safe, safer, safety, sign, signpost, sky, slow, speed, street, suburb, symbol, thirty, traffic, transport, transportation, warning, white, zone,