Ключевые слова: access, area, attention, band, barricade, barrier, biological, black, border, caution, chemical, construction, cross, danger, design, element, forbidden, hazard, hospital, illustration, isolated, lab, line, medical, merscov, ncov, pandemic, perimeter, precaution, protection, red, restricted, ribbon, road, safety, security, sign, silhouette, stop, strip, symbol, tape, under, virus, yellow,