Ключевые слова: advice, ahead, alarm, alert, attention, background, blue, car, caution, child, cloud, color, cross, danger, dangerous, design, drive, graphic, highway, icon, information, kid, law, left, limit, man, mark, metal, outside, pattern, right, road, safety, school, secure, security, shadow, sign, sky, slow, speed, symbol, traffic, transport, transportation, vehicle, warning, white, zone,