Free New Jersey CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 NJ commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NJ 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.
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
3.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
4.
A dual air brake system ________.
5.
An air brake system is fully charged at what psi?
6.
The application pressure gauge shows how much air pressure you:
7.
In ideal conditions a truck or bus with air brakes going at 55 mph would require the stopping distance of how many feet?
8.
Normally during anti-lock braking, the driver:
9.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
10.
What should a driver do when the low air pressure warning signal comes on?
11.
What is the purpose of an antilock braking system (ABS)?
12.
When your brake's main air pressure is lost ________.
13.
"Some air brake systems have an alcohol evaporator. What may happen if you don’t keep the proper level of alcohol?"
14.
What happens when your brake drums get very hot?
15.
Besides heat, another cause of brake fade is:
16.
After the initial pressure drop, air leakage for single vehicles should be less than:
17.
Pressing and releasing the brake pedal unnecessarily:
18.
In order to make contact with the brake drum, the brake pads and linings are pushed outward by the:
19.
Pushing the brake pedal down harder __________.
20.
Brake linings should not be _______.
21.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
22.
Why do air brakes take longer to stop than hydraulic brakes?
23.
Why should air tanks be drained completely?
24.
Air tanks should be drained:
25.
Vehicles with ABS have malfunction lamps that are what color?