Free Nebraska CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Nebraska 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 Nebraska 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 CDL Practice Test Nebraska to get ready to pass the Nebraska CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 NE commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NE CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
When inspecting air brakes:
2.
A low air pressure warning signal is ________.
3.
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
4.
The most important thing to do when a low air pressure warning comes on is:
5.
Emergency stab braking is:
6.
In a controlled braking emergency:
7.
With air brake vehicles, the parking brake should be used:
8.
Where is the modulating control valve located on some vehicles?
9.
To make sure that the spring brakes come on automatically, do all of the following except:
10.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
11.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
12.
Air governor cut-out should be at around:
13.
The safety valve is set automatically when pressure is:
14.
The S-cam:
15.
Automatic air tanks _______.
16.
The service brake system ________.
17.
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
18.
In a dual air brake system, if the air pressure in one part of the system drops enough to set off the low air warning:
19.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
20.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
21.
Why should air tanks be drained completely?
22.
You should use the parking brake _____________.
23.
How often should alcohol containers be checked during cold weather?
24.
Manual air tank drains require:
25.
What is the function of a safety valve?