Ключевые слова: abstract, blur, city, engine, europe, european, fast, frankfurt, germany, green, ground, high, journey, lights, locomotive, metro, modern, motion, move, passage, people, perspective, platform, power, railroad, rapid, red, reflection, scene, sign, silhouette, speed, station, steel, subway, symbol, system, technology, traffic, train, transit, transport, transportation, travel, tube, under, underground, urban, vehicle, wagon, way,