Ключевые слова: access, accident, attention, background, banner, barricade, barrier, caution, conference room, construction, corona, coronavirus, covid19, crime, criminal, cross, danger, disease, epidemic, flu, forbidden, home, illustration, infection, isolated, isolation, law, line, mass events, pandemic, police, protection, quarantine, restricted, restriction, ribbon, risk, safety, scene, security, self isolation, sign, stop, stripe, symbol, tape, urban, virus, warning, yellow,