Ключевые слова: art, background, black, city, classic, design, engine, express, icon, illustration, isolated, label, locomotive, logo, machine, metro, modern, motion, old, passenger, poster, public, rail, railroad, railway, retro, road, set, shape, sign, silhouette, simple, speed, station, steam, subway, symbol, track, traffic, train, tram, transit, transport, transportation, travel, trip, vehicle, way, white,