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.
The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:
2.
In case of emergency when driving a vehicle equipped with dual parking control valves, you should:
3.
The safety valve discharges automatically at the pressure of:
4.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
5.
To test the vehicle's service brakes, move the vehicle:
6.
If your vehicle has an alcohol evaporator, it is there to:
7.
In a controlled braking emergency:
8.
The low air pressure warning signal indicates:
9.
What negatively affects the braking power of a spring brake?
10.
When should the spring brakes activate?
11.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
12.
When the safety valve releases air this indicates ___________.
13.
If the spring brakes are on, when should you push the brake pedal?
14.
If the low air pressure warning light comes on, you should:
15.
The parking brake should not be used when wet in freezing temperatures, or:
16.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
17.
The most common problem found in roadside inspections is:
18.
Why does a heavily loaded vehicle need a longer distance to stop?
19.
In dual air systems, how long should it take air pressure to build 85 to 100 psi?
20.
The braking power of the spring brakes ______.
21.
Brake drums or discs _______.
22.
If the air compressor has its own oil supply you should do what before driving?
23.
On large buses low pressure warning devices usually signal at ______.
24.
What does the air compressor governor control?
25.
The governor stops the compressor from pumping air at: