Ключевые слова: 30, accident, attention, automobile, car, circle, city, control, drive, fast, hour, kilometer, kilometres, km, law, limit, mark, maximum, movement, no cars, no people, nobody, prohibited, protection, reduce, regulation, regulations, residential, road, roadsign, round, rule, safety, security, sign, signal, slow, spanish, speed, street, symbol, thirty, traffic, traffic sign, transport, urban, vehicle, warning, way, zone,