Free New Hampshire CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 NH commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NH CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
Excessive use of the service brakes results in overheating which can lead to:
2.
An air brake system is fully charged at what psi?
3.
In case of a low air situation, the spring brakes should come on at:
4.
If your truck has a properly functioning dual air brake system and minimum size air tanks, the air pressure should build up from 85 to 100 psi within how many seconds?
5.
If your vehicle has an alcohol evaporator, it is there to:
6.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
7.
When the safety valve releases air this indicates ___________.
8.
What should a driver do when the low air pressure warning signal comes on?
9.
When parking a vehicle with a modulating control valve ________.
10.
Air governor cut-out should be at around:
11.
"Some air brake systems have an alcohol evaporator. What may happen if you don’t keep the proper level of alcohol?"
12.
The level at which the air compressor stops pumping air is:
13.
The air compressor governor controls:
14.
The emergency spring brake release knob is:
15.
All of the following apply if the low air pressure warning signal does not work except:
16.
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
17.
How are brakes designed?
18.
Which of the following helps the stop light switch work?
19.
Initial air leakage rate for combination vehicles should be:
20.
The safety valve in the air compressor tank is set to open at _____.
21.
What does the air compressor governor control?
22.
Air tanks should be drained:
23.
What does ABS stand for?
24.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?
25.
To test the parking brake you should _______.