Delaware Driver Education State Practice Test

What does hydroplaning refer to in driving?

1. The complete loss of traction on the road due to water

2. Sliding on icy roads

3. Driving at high speeds

4. Having poor tire pressure

The correct answer is: The complete loss of traction on the road due to water

Hydroplaning refers specifically to the situation where a vehicle loses traction as a result of water on the road surface. This occurs when a layer of water builds up in front of the tires, preventing direct contact with the road. When this happens, the tires can slide across the water, leading to a loss of control. This phenomenon is particularly dangerous as it can happen without warning and may cause the driver to be unable to steer, brake, or accelerate effectively. In contrast, sliding on icy roads involves a different set of conditions where the pavement is frozen, leading to loss of control due to ice. Driving at high speeds can contribute to hydroplaning but does not define it. Similarly, while poor tire pressure can affect traction, it is not synonymous with the term hydroplaning, which is distinctly about water and traction issues.