Semaphore with burning blue light. The intersection of railway tracks, rail, transportation, line, railway, way, road, railroad, station, track, industry, steel, transport, train, travel, junction, metal, direction, industrial, crossroad, perspective, pattern, traffic, transit, technology, freight, path, logistic, crossing, city, change, background, sleeper, confusion, stone, iron, girder, ballast, outdoor, old, complexity, carriage, business, intersection, concept, infrastructure, cargo, dusk, semophore