Texas CDL General Knowledge Practice Exam

How can you recognize if your truck is hydroplaning?

1. If the steering feels light or unresponsive

2. When the engine starts to rev unexpectedly

3. If the brakes feel spongy or ineffective

4. When the headlights flicker on and off

The correct answer is: If the steering feels light or unresponsive

Recognizing hydroplaning is crucial for maintaining control of your vehicle in wet conditions. When your truck is hydroplaning, the tires lose contact with the surface of the road due to a layer of water separating them. This situation often results in a noticeable change in the steering response. If the steering feels light or unresponsive, it indicates that the tires are not adequately gripping the pavement, which is a primary sign of hydroplaning. Drivers may feel an absence of resistance in the steering wheel, making it difficult to steer the vehicle as intended. The other choices do not specifically relate to the phenomenon of hydroplaning. For example, if the engine starts to rev unexpectedly, it usually points to an issue with the throttle or transmission rather than a loss of traction. Spongy or ineffective brakes suggest a problem with the braking system, such as air in the hydraulic lines or worn brake components, but this is not a direct indicator of hydroplaning. Lastly, flickering headlights could imply electrical issues or a problem with the vehicle's battery or alternator, which are unrelated to the vehicle's tire traction on wet surfaces. Recognizing the signs of hydroplaning is essential for a driver’s safety, enabling them to react appropriately and regain control