Ключевые слова: against, background, blue, board, car, close, clouds, color, colorful, danger, direction, electricity, english, halt, highway, icon, isolated, message, metal, nobody, object, octagon, octagonal, outdoor, outside, post, power lines, red, road, roadside, roadsign, safety, sign, signage, signal, sky, stop, street, symbol, text, traffic, transport, transportation, travel, voltage, warning, white, wires, word,