Ключевые слова: backdrops, background, barrier, barriers, big letters, bold, bold lettering, business, caution, close up, closed, communicate, concepts, danger, dangerous, deter, eliminate, fence, fences, forbidden, hazard, information, intrusion, keep out, letters, message, no, no trespassing, obstructions, obvious, outdoor, posted, protection, red, restricted, risk, safety, secure, security, sign, signage, signs, symbol, symbols, text, trespassing, vandalism, warning, white, work,