Ключевые слова: background, change, construction, crossroad, direction, equipment, heavy, industrial, industry, infrastructure, intersection, iron, join, junction, line, locomotives, material, metal, metallurgy, node, objects, part, pattern, rail, railroad, rails, railway, railways, road, spare parts, steel, structure, switch, technology, track, traffic, trains, transit, transport, transportation, travel, vehicle, way, work,