Commercial Driver License (CDL) Class B Practice Test

What is the proper procedure for using a jack?

Use the jack on soft ground Ensure the vehicle is on a stable surface Use the jack without wheel chocks Follow the manufacturer's guidelines?

Correct Answer:

Ensure the vehicle is on a stable surface

Explanation:

The proper procedure for using a jack involves ensuring that the vehicle is on a stable surface. A stable surface provides a solid foundation that helps prevent the vehicle from tipping or shifting while it is being lifted. Proper stability decreases the risk of accidents and injuries during the jacking process, which can be especially dangerous if the vehicle is heavy and unbalanced. Using a jack on soft ground can lead to sinking or shifting, which compromises safety. Similarly, neglecting to use wheel chocks can allow the vehicle to move unexpectedly, posing a significant hazard. Following the manufacturer’s guidelines is essential for safety and effectiveness, but it is predicated on the vehicle being on a secure and stable surface first.

Access more questions from this quiz

Continue to Commercial Driver License (CDL) Class B Practice Test for more practice questions and the full quiz experience.

Access More Questions