Road Work or Construction

These signs are often temporary in nature and used to indicate road works (construction), poor roads, or temporary conditions ahead on the road including: flagmen, survey crew, single-lane, detour, bridge out, utility crew ahead, blasting area, bump, dip, frost heaves, flooding (or "High water"), soft shoulder, uneven pavement, freshly oiled road, loose gravel, smoke on road, trucks entering, etc. (note that some high water signs are posted to alert drivers of a flood prone area and do not actually mean that there is a flooded section of road ahead) In France, Italy, Spain, Norway etc., warning (and speed limit) signs connected with road works have yellow background, these countries normally have white background on signs. In America and Ireland, signs connected with road works have orange background.