Ключевые слова: 20, black, car, circle, colorful, control, danger, design, drive, fifty, forbidden, highway, hour, icon, information, isolated, km, law, limit, limitation, mark, maximum, metal, miles, mph, nobody, number, object, pictogram, post, red, regulation, restriction, road, route, safety, sign, slow, speed, street, symbol, traffic, transport, transportation, velocity, warning, white,