Free CDL Quiz

When going down a long steep hill, what is the proper braking technique?

a.Apply brakes continuously all the way down
b.Use snub braking by applying brakes to slow 5 mph below your safe speed then release
c.Shift to neutral and coast to save brakes
d.Only use the parking brake

Explanation

The correct technique on long downgrades is snub braking. Apply the brakes firmly enough to reduce your speed to about 5 mph below your safe speed for that grade, then release the brakes. Repeat this process. This helps prevent brake fade from overheating.

← Back to CDL Air Brakes Test #2

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About the CDL Exam

The CDL (Commercial Driver License) exam tests your knowledge of commercial driving rules, safety procedures, and vehicle operation. You must score 80% or higher to pass the written knowledge test. The exam covers general knowledge, air brakes, combination vehicles, and various endorsements.

This question is from the CDL Air Brakes Test #2 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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