Ключевые слова: alert, allowed, attention, ban, caution, circle, danger, design, fire, forbid, forbidden, graphic, hazard, icon, illegal, illustration, indication, industry, information, isolated, law, line, mark, negative, no, not, notice, prevent, production, prohibit, prohibited, prohibiting, prohibiting signs, prohibition, protection signs, restrict, restricted, restriction, risk, road, safety, sign, signal, stop, symbol, traffic, warning,