AIR BRAKE CDL TEST – 03

We know that taking the air brakes test as part of your CDL permit can cause anxiety in even the most confident driver. That is why we designed this free air brake CDL test so that you can practice and get an idea of what types of questions will be asked on the actual test at the DMV. 

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Air Brake Test 03

1 / 25

Repeatedly pressing and releasing (FANNING) the pedal may result in a loss of air pressure.

2 / 25

When braking with a manual transmission, you should not press the clutch in until the engine RPM is...?

3 / 25

When you have chosen a 'safe' speed for descending, you should try to keep your speed between it and...?

4 / 25

For a normal stop with air brakes, you should...?

5 / 25

If your ABS malfunctions, you should...?

6 / 25

When braking on downgrades...?

7 / 25

If you only have ABS on your tractor and your trailer starts to swing out, you should...?

8 / 25

Your brakes will overheat and start to fade if...?

9 / 25

The first maneuver in 'stab braking' is to...?

10 / 25

If your brakes are very hot from a long downgrade, you should avoid...?

11 / 25

You are driving a vehicle at 55 mph on dry pavement under good traction conditions. What is the approximate total stopping distance needed to bring your vehicle to a complete stop?

12 / 25

To reach a speed 5 mph below your 'safe' speed on a downgrade should take around...?

13 / 25

Which of these is a factor in braking with air brakes which does not apply to hydraulic brakes?

14 / 25

While making a controlled braking stop, your steering adjustments should be...?

15 / 25

Front wheel braking is good under all conditions.

16 / 25

Which of these is the most important factor in descending a downgrade safely?

17 / 25

To test the parking brake, you should apply it and...?

18 / 25

If your wheels lock up, you must be aware that after you release the brakes it can take up to how long for the wheels to start rolling again?

19 / 25

ABS brakes will help you to...?

20 / 25

If your brakes are very hot, or are wet when the temperature is freezing, instead of using the parking brake you should...?

21 / 25

Braking with air brakes from a 55 mph on dry pavement will add how much to your total stopping distance compared to hydraulic brakes?

22 / 25

If the air compressor develops a leak, what keeps the air in the tanks?

23 / 25

Braking at 15 mph on dry pavement, you will take how much further to stop with air brakes than you would with hydraulic brakes?

24 / 25

If you only have ABS on your trailer and you start to lose control of the tractor steering, you should...?

25 / 25

You should test the compressor governor cut in and cut out pressures with the engine running at...?

Your score is

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Taking the air brakes test as part of your CDL permit can be a source of anxiety, even for experienced drivers. To assist you in your preparation, we have created a free air brake CDL practice test that mirrors the types of questions you may encounter on the actual DMV test. We encourage you to utilize this resource repeatedly until you feel confident in achieving a perfect score.

This practice test is designed to enhance your understanding of the material and improve your skills as you study for your exam. We invite you to return and explore all of our practice exams to support your preparation further.

Additionally, by engaging with these tailored CDL Air Brake test questions, you will not only build your confidence but also gain essential knowledge for a successful career in driving.