Free Alaska CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Alaska 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 Alaska CDL practice test questions are based on the Alaska DMV 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 Alaska CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 AK commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AK CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
2.
Air brakes consist of ________.
3.
Excessive use of the service brakes results in overheating which can lead to:
4.
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?
5.
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?
6.
In a controlled braking emergency:
7.
To make sure that the spring brakes come on automatically, do all of the following except:
8.
The safety valve reduces pressure at ___ psi.
9.
The parking brake knob is usually:
10.
When brakes are applied, the brake shoes will press against the:
11.
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
12.
Compared to hydraulic brakes, air brakes add how much distance to an average 55 mph stop?
13.
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
14.
Controlled braking is only possible _________.
15.
The brake pedal in an air brake system _______.
16.
The service brake system ________.
17.
On newer vehicles what color is the parking brake knob?
18.
Automatic air tanks _______.
19.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
20.
Why should you drain water from compressed air tanks?
21.
Spring brakes are applied:
22.
What does ABS stand for?
23.
On a long or steep downgrade, how should vehicle speed be primarily controlled?
24.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?
25.
What is an alternative name for a brake pedal?