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 parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like:
2.
A low air pressure warning signal is ________.
3.
Air tanks need to be drained ______.
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.
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks falls below ____ psi.
6.
To test the vehicle's service brakes, move the vehicle:
7.
In ideal conditions a truck or bus with air brakes going at 55 mph would require the stopping distance of how many feet?
8.
When should the spring brakes activate?
9.
What is the purpose of an antilock braking system (ABS)?
10.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
11.
Why is manually adjusting automatic slack adjusters dangerous?
12.
The safety valve is set automatically when pressure is:
13.
If the low air pressure warning light comes on, you should:
14.
The manual adjustment of automatic slack adjusters is:
15.
The parking brake should not be used when wet in freezing temperatures, or:
16.
Which of these is NOT a proper time to apply the parking brakes?
17.
The trailer air supply knob is usually:
18.
To stop the vehicle, the brake shoes and linings are pushed against:
19.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
20.
The most common type of foundation brake is?
21.
Why do air brakes take longer to stop than hydraulic brakes?
22.
Brake drums or discs _______.
23.
How often should alcohol containers be checked during cold weather?
24.
Vehicles with air brakes have pressure gauges connected to the _______.
25.
If your brakes are wet, what should you do to dry them quicker?