Ключевые слова: abstract, barricade, barrier, black, blocking, bright, closed, closeup, color, concept, construction, danger, dangerous, equipment, fence, glass, hanging, hazard, isolated, lamp, light, men, metal, modern, nature, new, no, outdoor, plastic, red, reflector, road, safety, security, sign, site, stop, street, stripes, symbol, texture, traffic, transportation, warn, warning, way, white, work, yellow,