Ключевые слова: access, allowed, banned, beyond, black, build, builder, communication, construction, employee, entrance, equipment, factory, fence, forbid, forbidden, gate, health, industrial, industry, mandatory, no, notice, order, palisade, permitted, person, personal, personnel, persons, point, prohibit, prohibited, protection, red, regulations, restrict, restricted, restriction, rules, safety, sign, site, symbol, unauthorised, unauthorized, warning, white, workers, working,