Free Montana CDL Air Brakes Practice Test 2023

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

Our CDL practice tests:
Based on 2021 MT commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MT 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?
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
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?
A dual air brake system ________.
In case of a low air situation, the spring brakes should come on at:
On a long or steep downgrade, the foot brakes should be used:
Spring brakes will generally come on at:
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?
What should a driver do when the low air pressure warning signal comes on?
In most newer vehicles, the parking brake control will be:
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
If the air compressor should develop a leak, what keeps the air in the tanks?
The safety valve reduces pressure at ___ psi.
The parking brake knob is usually:
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
If air pressure is not built up within the correct amount of time, then:
The S-cam:
Controlled braking is only possible _________.
If one air system is very low on pressure _______.
The air compressor is connected to the engine through ______.
Which of the following helps the stop light switch work?
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:
What brake system uses part of the service and parking brake systems to stop the vehicle in the event of a brake system failure?
The warning light and buzzer will come on when the air pressure in either system drops below what psi?