Ключевые слова: access, accident, area, attention, barricade, barrier, block, border, boundary, caution, closed, crime, criminal, cross, danger, disease, epidemic, forbidden, hazard, healthcare, infection, investigation, isolation, law, line, murder, perimeter, police, protection, red, restricted, restriction, ribbon, risk, road, safety, scene, security, sign, site, stop, strip, striped, symbol, tape, urban, violence, warning, white, zone,