Commercial Driver License (CDL) Class B Practice Test

Which type of suspension defect could cause serious handling issues?

1. Leaking shock absorbers

2. Clean shock absorbers

3. New leaf springs

4. Untouched axles

The correct answer is: Leaking shock absorbers

Leaking shock absorbers are critical components of a vehicle's suspension system that help control the vehicle's ride by dampening the movement of springs. When shock absorbers leak, they lose their ability to effectively absorb shocks and bumps from the road. This can lead to excessive bouncing, swaying, or instability while driving, especially at higher speeds or during turns. The handling of the vehicle can become unpredictable, making it more difficult for the driver to maintain control. In contrast, clean shock absorbers would indicate they are functioning properly, new leaf springs would typically suggest that the suspension system is in good condition, and untouched axles would not inherently cause handling issues. Therefore, a defect like leaking shock absorbers poses a direct risk to both vehicle control and driver safety, highlighting the importance of maintaining and inspecting suspension components regularly.