Ключевые слова: background white, barricade, building, building construction, civil engineering, civil engineering construction, construction, construction site, construction work, dangerous, equipment, equipment and equipment, facility security, fence, field work, guard, image, induction, induction lamps, induction rod, materials, mini, miniature, note, off limits, patrol, protect, public works, rail, reflective vests, risk, safety, safety first, security, security guard, security materials, security materials and equipment, sheriff, site, traffic control, traffic guidance, white back, white background, work, workers,