Ключевые слова: abstract, airport, architecture, background, building, business, city, concept, down, electric, elevator, entrance, escalator, fast, forward, indoor, interior, lane, lifestyle, metro, modern, move, movement, moving, office, pass, perspective, shopping, stair, staircase, stairs, stairway, station, steel, step, technology, train, transport, transportation, travel, up, urban, walkway, way, working,