Ключевые слова: american, asphalt, attention, black, circle, city, control, danger, design, direction, drive, fast, information, isolated, law, limit, limitation, mark, max, maximum, mile, mph, nobody, number, object, pictogram, post, red, regulation, restriction, road, sign, signal, signs, slow, speed, street, symbol, traffic, transit, transport, transportation, travel, traveling, velocity, warning, way, white,