Ключевые слова: art, background, balance, color, colorful, construction, design, drawing, engine, etching, fast, handcar, icon, illustration, isolated, locomotive, machine, mechanical, metro, modern, old, passenger, pop, popart, poster, rail, railroad, railway, retro, running, set, speed, station, style, subway, symbol, track, train, transport, transportation, travel, trolley, underground, vehicle, vintage,