CDL Air Brakes drill: Inspecting and using air brakes

10 questions · Untimed · Explanation after each question

Ten questions on Inspecting and using air brakes, about 39% of the 25 questions in the full Air Brakes practice test.

Line drawing of two air-pressure gauges, a coiled air hose, a brake chamber and a brake drum

Before you start

Every question has three answer choices, like the state knowledge tests, and cites the CDL manual section it comes from.
Check each answer to see the explanation before moving on. Checked answers cannot be changed.

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Original practice questions written from the model CDL manual. Independent preparation, not affiliated with or endorsed by FMCSA, AAMVA or any state licensing agency.