Ключевые слова: aluminum, blue, circle, communication, country, countryside, drive, enter, entry, environment, forest, green, halt, keep, law, mast, message, metal, nature, no, not, oneway, pass, plate, post, prevent, prohibit, prohibition, protect, red, regulation, restriction, road, roadside, round, rule, rural, sign, signal, sky, stop, symbol, traffic, transport, travel, tree, vehicle, warning, white, woods,