Ключевые слова: alert, attention, awareness, background, caution, cautionary, clear, closeup, construction, design, design elements, direct, durable, electrical, environment, equipment, font, graphic design, hazard, highcontrast, indicators, industrial, industrial environment, informative, lightning, maintenance, management, materials, message, notice, outdoor, precautions, preventive, procedures, readable, risk, safety, safety measures, security, sign, signage, surface, symbol, visibility, visible, visual, warning, workplace, yellow,