Ключевые слова: access, accident, alert, area, attention, barrier, blocked, border, building, caution, construction, crime, criminal, cross, danger, dangerous, fence, fenced, forbidden, hazard, industrial, infrastructure, line, maintenance, notice, outdoor, precaution, prevent, prevention, project, protection, red, restricted, restriction, ribbon, risk, safety, secure, security, site, stop, strip, striped, tape, urban, warning, white, work, zone,