Aquaplaning

A diagram of an aquaplaning tire
Two vehicles aquaplaning through large puddles on the road's surface

Aquaplaning or hydroplaning by the tires of a road vehicle, aircraft or other wheeled vehicle occurs when a layer of water builds between the wheels of the vehicle and the road surface, leading to a loss of traction that prevents the vehicle from responding to control inputs. If it occurs to all wheels simultaneously, the vehicle becomes, in effect, an uncontrolled sled. Aquaplaning is a different phenomenon from when water on the surface of the roadway merely acts as a lubricant. Traction is diminished on wet pavement even when aquaplaning is not occurring.[1]

  1. ^ Ron Kurtus (28 March 2008). "Preventing Loss of Traction". School for Champions. Retrieved 2012-01-13. When a surface is wet, a layer of water can act as a lubricant, greatly reducing the traction and stability of the vehicle. If enough water is under the tire, hydroplaning can occur.