Ключевые слова: alert, arrow, asphalt, autobahn, background, barrier, block, building, caution, circle, city, construction, contraction, danger, detour, equipment, forty, highway, industry, light, machinery, milling cutter, motorway, orange, paver, progress, repair, road, safety, shadow, sign, signal, site, spring, stop, street, sunny, symbol, track, traffic, transportation, truck, under, urban, walk, warning, white, work, worker, zone,