Ключевые слова: accident prevention, alert, attention, background, barricade, barrier, black, bold, closeup, color contrast, concept, construction, construction site, danger, danger zone, emergency, hazard, hazard sign, isolated, message, miniature, notice, obstruction, plastic, plastic texture, preventive, prohibition, protective, red, restricted, restricted area, restriction, risk, safety, safety equipment, security, sign, signage, small, stop, striped, symbol, toy, traffic, visual alert, warning, warning sign, workplace safety, yellow,