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.
If you do not have automatic tank drains, how often should you drain the oil and water from the bottom of compressed air storage tanks?
2.
The safety valve discharges automatically at the pressure of:
3.
A low pressure warning signal could be __________.
4.
How far should manual slack adjusters move before they need to be adjusted?
5.
The supply pressure gauge shows how much pressure:
6.
Brake fade is caused by:
7.
When you need to depress the brakes harder and harder just to maintain the same speed this means ______.
8.
If you must make an emergency stop, you should brake so you:
9.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than _____ of the width of the friction area.
10.
If the low air pressure warning light comes on, you should:
11.
When checking the air pressure buildup, pressure should build:
12.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
13.
Compared to hydraulic brakes, air brakes add how much distance to an average 55 mph stop?
14.
On newer vehicles what color is the parking brake knob?
15.
How should the air leakage rate be tested?
16.
The air tanks must be drained because:
17.
Why should you drain water from compressed air tanks?
18.
Automatic adjusters should ________.
19.
Brake drums or discs _______.
20.
Spring brakes are applied:
21.
What is the purpose of a supply pressure gauge?
22.
What does ABS stand for?
23.
The warning light and buzzer will come on when the air pressure in either system drops below what psi?
24.
To test the parking brake you should _______.
25.
If your brakes are wet, what should you do to dry them quicker?