Ключевые слова: access, approach, barrier, beware, black, block, caution, close, concrete, construction, cordon, cross, danger, do not, dots, enter, foundation, line, maintenance, outside, plastic, prevent, prohibit, protect, red, reflective, restrict, ribbon, risk, roll, safety, scene, security, sign, situation, speckle, stop, surround, tape, tie, trespass, warning, work, zone,