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.
The stop light switch:
2.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
3.
In case of a low air situation, the spring brakes should come on at:
4.
Total stopping distance for air brakes is longer than that for hydraulic brakes due to ______ distance.
5.
Your brakes are fading when:
6.
The ____ shows how much pressure is in the air tanks.
7.
The main factor in causing brake fade is:
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.
Another name for the brake pedal is the "foot valve", or:
10.
When using a vehicle with air brakes, the parking needs to be used _______.
11.
When does the air compressor governor allow air to start pumping?
12.
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
13.
Why is manually adjusting automatic slack adjusters dangerous?
14.
If your truck has a dual air brake system, and one of the systems is low on pressure:
15.
The parking brake should not be used when wet in freezing temperatures, or:
16.
If air pressure is not built up within the correct amount of time, then:
17.
The service brake system ________.
18.
The air compressor is connected to the engine through ______.
19.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
20.
How does the antilock brake system benefit the driver?
21.
What is used to put alcohol into the system and reduce ice risk?
22.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
23.
The governor stops the compressor from pumping air at:
24.
On a long or steep downgrade, how should vehicle speed be primarily controlled?
25.
Water and oil _______.