Ключевые слова: announcement, asfa, automatic, ballast, beacon, blocking, blue, braking, cabinet, catenary, driver, electrification, electrified, frequency, green, high, indication, industrial, industry, infinity, iron, light, line, metal, old, outdoor, passive, perspective, rail, railroad, rails, railway, security, signal, sky, sleepers, spain, stairs, straight, technology, track, traffic light, train, transformation, transport, transportation, travel, vegetation, way,