Ключевые слова: access, alert, attention, awareness, ban, barrier, boundary, caution, caution zone, control, danger, danger notice, design, emergency, entry, environment, graphic, hazard, information, message, metal fence, notice, order, outdoor, pedestrian, pedestrian warning, prevention, prohibition, protection, public safety, regulation, restricted access, restriction, rule, safety, safety board, safety sign, security, sign, signage, signal, traffic, urban, visual, visual alert, walking, walking prohibited, warning, warning sign, zone,