CDL General Knowledge Practice Test

Wheels fishtailing is a clear sign of tire failure while driving. This phenomenon occurs when the rear wheels lose traction and begin to slide sideways, which can be a direct result of a tire that is deflated, damaged, or otherwise compromised. When a tire fails, it may not make sufficient contact with the road, causing a loss of control and making the vehicle difficult to steer; this can lead to fishtailing. Monitoring the vehicle's handling is crucial, as any signs of instability should prompt an immediate inspection of the tires. Steering difficulties can also indicate tire problems but are not as specific to tire failure as fishtailing. Additionally, increased fuel efficiency and consistent tire pressure do not suggest any issues; in fact, they would indicate that the tires are functioning properly. Keeping an eye on the vehicle's response and handling characteristics is vital for safety, as any abnormal behavior, particularly fishtailing, should be addressed quickly to prevent accidents.