Ключевые слова: ai, art, background, black, communication, concept, design, drawing, elegant, element, graphic, group, icon, illustration, image, internet, isolated, metro, modern, objects, old, outline, passenger, rail, railroad, railway, route, shape, sign, silhouette, speed, station, style, subway, symbol, track, train, tram, transport, transportation, travel, underground, vehicle, vibrant, way, white,