Ключевые слова: alerting, attention, biohazard, blue, button, caution, control, cross, danger, death, electricity, emblem, explosive, fire, flammable, green, hazard, icon, information, label, landscape, light, message, metal, no, pole, prohibited, prohibition, protection, radiation, risk, road, safety, security, set, sign, signal, sky, sticker, stop, street, symbol, toxic, traffic, transport, transportation, travel, warning, white,