Pennsylvania DMV CDL Air Brakes Quick Practice Test For 2024

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?

2. If the spring brakes are on, you should:

3. What can happen if the air pressure gets too low in an air brake system?

4. If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. The belt should be:

5. What is brake lag?

6. You should not use the parking brake:

7. Having ABS on only one axle:

8. Air brakes use ____ to function.