Ключевые слова: against, area, background, black, blue, car, caution, circle, city, country, drive, gravel, green, h, highway, hour, kilometers, km, lamps, law, limit, limited, maximum, mph, nature, nobody, number, outdoor, per, perspective, red, regulation, road, roadsign, round, safety, side, sign, sky, slow, speed, street, summer, symbol, traffic, transportation, warning, white,