# Free Maine CDL Air Brakes Practice Test 2023

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 2021 ME commercial driver's license manual
Perfect for first-time, renewal applicants
ME CDL Air Brakes Test format:
25 questions
80% passing score
List of questions
1.
The air compressor stops pumping air at what psi?
2.
Modern air brakes combine three different systems. They are the service, the parking, and the _____ brakes.
3.
A dual air brake system ________.
4.
In case of a low air situation, the spring brakes should come on at:
5.
Total stopping distance for air brakes is longer than that for hydraulic brakes due to ______ distance.
6.
Why drain water from compressed air tanks?
7.
In a controlled braking emergency:
8.
When performing the controlled braking method for an emergency stop, you are _________.
9.
Generally, air governor cut-in should be at:
10.
If the spring brakes are on, when should you push the brake pedal?
11.
What is a \"Wig Wag\"
12.
The level at which the air compressor stops pumping air is:
13.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
14.
If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
15.
Average stopping distance under normal conditions at 55 mph is:
16.
If you need to make an emergency stop, you should brake so that you can ________.
17.
On newer vehicles what color is the parking brake knob?
18.
Automatic air tanks _______.
19.
Which of the following helps the stop light switch work?
20.
The braking power of the spring brakes ______.
21.
How does the antilock brake system benefit the driver?
22.
Vehicles with air brakes _________.
23.
Spring brakes are applied:
24.
The governor stops the compressor from pumping air at:
25.
What is the purpose of an air storage tank?