Nevada DMV CDL Air Brakes Quick Practice Test

Nevada DMV CDL Air Brakes Quick Practice Test For 2026

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. What color malfunction lamps do vehicles equipped with ABS have?

Green
Yellow
Blue

2. In a dual air brake system, if one air system is very low on pressure:

None of the brakes will work at all.
Either the front or rear brakes will not be fully operable.
There is usually no noticeable effect.

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

The brakes may squeak.
The brakes may not work.
The brakes may be sluggish.
The brakes will be very sensitive.

4. If the brake pads rub against the brake drums and create too much heat:

The brakes will stick.
The brakes will become extra sensitive.
The brakes may stop working.
The air compressor will kick on to cool the brakes.

5. The parking brake should be:

Used whenever you park your vehicle.
Used while driving.
Set when driving in bad weather.
Removed.

6. Alcohol evaporators are:

Illegal.
Used to introduce alcohol into air brake systems.
Only allowed in the northern parts of the state.

7. An application pressure gauge shows:

How much air pressure is being applied to the brakes.
How much air pressure is available.
How much air pressure is required to stop a vehicle.

8. What color is the low air pressure warning light?

Green
Orange
Red
Purple

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