What should you do if your brakes fail on a downgrade?

a.Shift to neutral

b.Look for an escape ramp or other way to safely get off the road

c.Turn off the engine

d.Open the door to increase drag

Explanation

If your brakes fail on a downgrade, look for an escape ramp, an open field, or any other safe way to stop. Escape ramps use a long bed of loose material to slow and stop a vehicle. Downshift to use engine braking and do not shift to neutral.

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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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