CDL Air Brakes Knowledge Test [exam-quick]

What is 'snub braking' when used on a downgrade?

Pumping the brakes rapidly to build air pressure Applying brakes firmly to reduce speed by about 5 mph, then releasing until speed rises again Using only trailer brakes on steep grades Applying maximum brake pressure continuously throughout the descent

Correct Answer:

Applying brakes firmly to reduce speed by about 5 mph, then releasing until speed rises again

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