Commercial Driver License (CDL) Class B Practice Test

Wet brakes can significantly impact vehicle performance by increasing stopping distances. When brakes are wet, typically due to rain or other moisture, the friction between the brake pads and the brake rotors is reduced. This decrease in friction means that more distance is needed to slow down or stop the vehicle effectively, posing a safety risk, particularly in emergency situations. When brakes are functioning properly, they create a strong grip on the wheels, allowing drivers to control their stopping power effectively. However, the presence of water can create a film between the brake components, weakening that grip and resulting in longer stopping distances. It's essential for drivers to be aware of this potential hazard and allow extra space for braking when conditions are wet.