Ключевые слова: alarm device, assistance, background, booth, button, city, danger, distress, distressed, emblem, emergency, emergency services, entrance, help, icon, info, interior, medical, modern, panic, people, phone, public, railway, red, risk, road, safety, sign, sos, sos call, station, subway, subway station, symbol, telephone, town, train, transportation, travel, trip, urban, warning,