Loose chippings

Causes include: Excessive speed while driving through loose chippings damage both the road and vehicles.

This is a special hazard to motorcyclists and bicyclists, who may lose their balance and fall if their tires start sliding.

Loose chippings may accumulate on verges, where they may choke drainage channels.

[1] 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.