Ключевые слова: arrow, background, black, change, control, crossing, device, direction, equipment, hand, indicator, industrial, industry, iron, junction, lever, levers, line, metal, old, outdoor, point, rail, railroad, rails, railway, road, route, siding, sign, signal, speed, station, steel, switch, thailand, track, tracks, traffic, train, transport, transportation, travel, turn, wagon, way, weight, white,