Free North Dakota CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The North Dakota CDL Air Brake test has some differences from other endorsements because your license will receive a mark of restriction if you fail the test. So having good preparation before exam day is very necessary. To ensure that our questions are relevant, all of our CDL practice test packs are based on the North Dakota CDL Manual. Each question has a detailed explanation for you to thoroughly learn the format and the topic. Don't be afraid of having a restriction on your license. Let’s try our ND CDL Practice Test to get ready to pass the North Dakota CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 ND commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ND CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
To test air service brakes you should:
2.
What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?
3.
Air tanks need to be drained ______.
4.
Under normal conditions, in order to engage the parking brakes the driver should:
5.
Emergency stab braking is:
6.
Excessive heat caused by using your brakes too often can also cause:
7.
To stop the vehicle, air brakes systems use:
8.
When the engine is off and the parking brake released, a single vehicle air loss rate should be less than ________ psi in one minute.
9.
Normally during anti-lock braking, the driver:
10.
What type of brakes pushes a wedge between the ends of two brake shoes to stop the vehicle?
11.
The safety valve reduces pressure at ___ psi.
12.
If your truck has a dual air brake system, and one of the systems is low on pressure:
13.
Air braking takes more time than hydraulic braking because:
14.
The trailer air supply knob is usually:
15.
After the initial pressure drop, air leakage for combination vehicles should be less than:
16.
In a dual air brake system, the first system, supplying the rear brakes, is commonly known as the "primary" system, and the other as the:
17.
To stop the vehicle, the brake shoes and linings are pushed against:
18.
To test the parking brake, stop the vehicle, put the parking brake on, and:
19.
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
20.
Which of the following helps the stop light switch work?
21.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
22.
Automatic adjusters should ________.
23.
The safety valve in the air compressor tank is set to open at _____.
24.
The belt of a belt-driven air compressor should be ________.
25.
What is a wig wag ?