Ключевые слова: alert, area, attention, barrier, beware, building, caution, construction, construction site, danger, dangerous, fence, fencing, forbid, forbidden, hazard, hazardous, industrial, industry, information, keep, keep out, maintenance, no entry, people safety, perimeter, prohibited, repairing, restricted, restriction, risk, safety, security, signage, site, traffic, unauthorised, unauthorized, unsafe, urban, warn, warning, work, worker safety, working,