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
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
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
If you do not have automatic tank drains, how often should you drain the oil and water from the bottom of compressed air storage tanks?
The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about ____ below the posted speed and release your brake.
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?
Excessive heat caused by using your brakes too often can also cause:
To make sure that the spring brakes come on automatically, do all of the following except:
When testing air leakage rates for single vehicles, initial loss rate should be less than:
When you release the brakes and reduce the air pressure what makes up for that air loss?
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
In most newer vehicles, the parking brake control will be:
What type of brakes pushes a wedge between the ends of two brake shoes to stop the vehicle?
The parking brake knob is usually:
When checking the air pressure buildup, pressure should build:
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
If your vehicle has an alcohol evaporator, every day during cold weather you should:
If one air system is very low on pressure _______.
Why should you check the brake adjustment often?
In a dual air brake system, if the air pressure in one part of the system drops enough to set off the low air warning:
Brake linings should not be _______.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
The air tanks must be drained because:
The spring brakes of a tractor will come on when the air pressure falls within _______.
What brake system uses part of the service and parking brake systems to stop the vehicle in the event of a brake system failure?
What is an alternative name for a brake pedal?