Ключевые слова: accident, area, banner, black, blade, boundary, brightly, circle, circular, closed, closing, construction, cordon, crime, cross, cutting, danger, enclosure, forbidden, forensic, investigation, isolated, keep, label, line, machine, not, out, police, protection, protective, razor, ribbon, risk, safety, saw, sawblade, scene, security, sharp, sign, site, steel, symbol, tape, technology, tool, warning, yellow,