Horizontal, Italy, advancement, aging process, architecture, backgrounds, building, construction and building, construction site, cross-linked iron, danger signal, employment, forbidden, industry, peeling wall, perimeter, reflection, repair, ribbon signaling, road sign, safety, security, security systems, signal, stop, symbol of danger, text, tool work, traffic, under, under construction, yellow, development, direction, italy, district, utilization, diaphragm, edifice, mechanism, sign, nether, european country, progress, improvement, horizontal, writing, margin, exercise
A sign of work in progress, on the perimeter of a construction site.