Free Hawaii CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Hawaii 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 Hawaii CDL practice test questions are relevant, all of our practice questions are based on the Hawaii 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 with our CDL practice test to get ready to pass the Hawaii CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 HI commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
HI 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 air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:
4.
When inspecting air brakes:
5.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
6.
An air brake system is fully charged at what psi?
7.
Under normal conditions, in order to engage the parking brakes the driver should:
8.
The main factor in causing brake fade is:
9.
With air brake vehicles, the parking brake should be used:
10.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
11.
When your brake's main air pressure is lost ________.
12.
Spring brakes will come on automatically, but the parking brake can also be applied:
13.
What happens when your brake drums get very hot?
14.
The parking brake knob is usually:
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.
Average stopping distance under normal conditions at 55 mph is:
18.
Pressing and releasing the brake pedal unnecessarily:
19.
Controlled braking is only possible _________.
20.
If you need to make an emergency stop, you should brake so that you can ________.
21.
On newer vehicles what color is the parking brake knob?
22.
Why should you drain water from compressed air tanks?
23.
The air tanks must be drained because:
24.
In a dual air brake system, one system will typically control the rear brakes, and the other:
25.
Water and oil _______.