Ключевые слова: abstract, arrow, attention, auto, background, blue, car, cloud, cloudy, color, copyspace, cross, crossroad, damaged, danger, design, forbidden, highway, information, intersection, message, metal, nobody, object, octagon, old, pole, prohibition, red, road, roadsign, safety, sign, signal, sky, speed, stop, stopsign, symbol, text, texture, traffic, transport, travel, vintage, warning, white,