Hawaii Drivers Permit Practice Test

What is a key prevention measure against hydroplaning?

1. Ensure tires are worn down

2. Inflate tires to the wrong pressure

3. Reduce vehicle speed in rain

4. Ignore tread depth

The correct answer is: Reduce vehicle speed in rain

Reducing vehicle speed in rain is a crucial measure to prevent hydroplaning because hydroplaning occurs when a vehicle's tires lose contact with the road surface due to water accumulation. When driving at high speeds during wet conditions, the tires have less time to displace the water in front of them, increasing the risk of losing traction. Slowing down allows tires to maintain better contact with the road, enhancing the vehicle's grip and control, which significantly reduces the likelihood of hydroplaning. In contrast, ensuring tires are worn down, inflating tires to the wrong pressure, or ignoring tread depth would all contribute to poor handling and increased risk of hydroplaning. Worn tires lack the necessary tread to channel water away from the tire, while improper tire pressure can affect tire performance and road contact. Monitoring tread depth and maintaining proper tire inflation are essential for ensuring optimal tire function and safety in wet conditions.