Free Maine CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 ME commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ME CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The most common type of foundation brakes are:
2.
When inspecting air brakes:
3.
The safety valve discharges automatically at the pressure of:
4.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
5.
An air brake system is fully charged at what psi?
6.
Emergency stab braking is:
7.
The main factor in causing brake fade is:
8.
The low air pressure warning signal indicates:
9.
Normally during anti-lock braking, the driver:
10.
When using a vehicle with air brakes, the parking needs to be used _______.
11.
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
12.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
13.
When brakes are applied, the brake shoes will press against the:
14.
Air braking takes more time than hydraulic braking because:
15.
With air brake vehicles, the parking brakes should be used:
16.
Brake drums (or discs) must not have cracks longer than ____ the width of the friction area.
17.
You should avoid using the parking brake when _______.
18.
Pushing the brake pedal down harder __________.
19.
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
20.
The belt of a belt-driven air compressor should be ________.
21.
What does the air compressor governor control?
22.
To check the air compressor governor's "cut in" and "cut out" pressures you need to _________.
23.
To avoid damaging the brakes, what should you never do while the spring brakes are applied?
24.
To prevent too much pressure from building up in the system, what is installed?
25.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?