Ключевые слова: background, barricade, barrier, building site lamp, building siteluminous, caution, close up, closed, construction, danger, dangerous, detour, fence, flash, lamp, light, orange, protect, protection, red, road, safety, secure, secured, security, sign, signal, site, stop, street, technology, traffic, transportation, urban, warn, warning, warning sign, work, works, yellow,