Aquaplaning (aka hydroplaning) by the tyres occurs when a layer of water builds between the rubber tyres of the vehicle and the road surface, leading to the loss of traction and preventing the vehicle from responding to control inputs such as steering, braking or accelerating. If it occurs along all four wheels, the vehicle becomes, in effect, an uncontrolled ski.
Heavy vehicles can cause ruts in roads over time that allow water to pool, having a negative impact on the roads draining ability.
The tyre pressures and the amount of tread you have on your tyres plays a big part in ensuring your tyres clear the water rather than skiing across the top of it.
