Ключевые слова: attention, autumn, background, beginning, black, board, caution, circle, concept, danger, dangerous, departure, design, destination, direction, dots, forest, graphic, icon, information, metal, object, old, place, public, rail, railroad, rails, railway, road, safety, set, sign, station, stop, subway, symbol, track, traffic, train, transport, transportation, travel, urban, vintage, way, white,