Ключевые слова: 13, alphabet, ancient, back, background, bank, black, blue, car, communication, countryside, danger, directional, grass, guidance, historic, indicator, kilometre, lane, letter d, mark, mile, milepost, milestone, number, old, outdoor, outside, perspective, point, post, road, roadside, roadway, sign, sky, speed, stone, symbol, track, traditional, traffic, trail, transportation, travel, vertical, vintage, white, yellow,