Ключевые слова: apart, blur, branch, caution, concept, control, crossing, crossroad, crossway, crotch, danger, direction, equipment, flash, gravel, industry, infrastructure, intersection, iron, journey, lamp, landscape, light, line, long, metal, off, point, rail, railroad, railway, red, road, roadway, safe, safety, semaphore, sign, signal, sky, sleepers, speed, stop, symbol, track, traffic, transport, transportation, travel, way,