Ключевые слова: accident, alert, automatic, aware, careful, caught, caution, centre, climb, closeup, danger, dead, electric, elevator, escalator, floor, forbidden, gear, handle, handrail, help, hold, injury, ladder, leg, lift, machine, mall, metal, motion, move, pictograph, public, risk, safe, shopping, shredded, stairs, stairway, station, steel, steps, subway, transport, up, victim, walkway, wrong,