Ключевые слова: baby, background, business, careful, city, design, elevator, emergency, escalator, escape, floor, forbidden, grey, icon, information, kid, lift, mall, metal, modern, mother, motion, moving, passenger, people, pictogram, prohibition, public, safety, security, shopping, sign, stair, staircase, stairway, step, symbol, transport, transportation, travel, trolley, up, urban, warning, warning sign, wheelchair,