CDL Vehicle Combination Practice Test

Strange noises when braking is a common sign of brake wear in a combination vehicle. As the brake components begin to wear, they can produce various sounds, such as squeaking, grinding, or squealing. These noises often indicate that the brake pads are thinning or that there may be debris trapped in the brakes. It is essential for drivers to pay attention to these auditory cues, as they can signal the need for maintenance or further inspection to ensure the braking system remains effective and safe. Being alert to changes in sound can help prevent more severe issues that could arise from neglected brake wear.

In contrast, decreased fuel efficiency, increased turning radius, and vibrations in the steering wheel could indicate other mechanical issues. While they might affect the overall performance of the vehicle, they are not direct indicators of brake wear specifically. Understanding these distinct signs is crucial for the maintenance and safety of combination vehicles.