Ключевые слова: alert, area, attention, background, camera, caution, chain, city, construction, control, dangerous, digital, entry, equipment, fence, forbidden, icon, illustration, information, isolated, keep, label, link, message, metal, no, notice, outdoor, private, prohibited, property, protection, record, red, restricted, safety, secure, sign, signage, stop, surveillance, symbol, technology, trespassing, urban, video, warning, white, wire, zone,