Loose chippings are stone fragments which have become detached from a road surface and form a hazard to vehicles using that road. They may arise following roadworks for which tarmac has been used but not yet steamrolled or settled. In many countries, road signs are put up, requiring vehicles to drive at a low speed. In the UK, these temporary traffic signs will require the driver to proceed at 20 mph.
The consequences of speeding too fast through loose chippings are that both the road and vehicles are damaged. The loose chippings are picked up by tyres and may be spun off to become high speed missiles.
Loose chippings may also accumulate on curves and verges where they may choke drainage channels and form a hazard for cyclists who tend to ride at the side of the road.
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