Ключевые слова: background, change, commercial, connection, contact wire, converging, direction, dispatching, electric train, high, high voltage, highvoltage wires, industrial, industry, join, line, logistic, many, merge, merger, perspective, power, power cable, power supply, rail, railroad, railway, russia, russian railway, service, sleepers, snow, split, steel, switch, technology, together, track, tract, train, train tracks, transit, transport, transportation, travel, vintage, voltage, winter, winter railway,