Ключевые слова: access, alert, attention, background, ban, caution, circle, concept, danger, design, direction, do, enter, entrance, entry, forbidden, graphic, icon, illustration, information, isolated, law, metal, negative, no, not, object, police, prevent, prohibit, prohibited, prohibition, red, restrict, restriction, road, roadsign, round, safety, shape, sign, stop, street, symbol, traffic, transportation, warning, way, white,