Free Montana CDL Air Brakes Practice Test 2022

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 2022 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
1.
When inspecting air brakes:
2.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
3.
A low pressure warning signal could be __________.
4.
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.
5.
Emergency stab braking is:
6.
A mechanical device that drops a low air warning into a drivers view is called a:
7.
Your brakes are fading when:
8.
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ________ brake system.
9.
When does the air compressor governor allow air to start pumping?
10.
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
11.
To check the free play of manual slack adjusters of S-cam brakes, you should park on:
12.
Why is manually adjusting automatic slack adjusters dangerous?
13.
What is a \"Wig Wag\"
14.
The air compressor governor controls:
15.
Besides heat, another cause of brake fade is:
16.
The emergency spring brake release knob is:
17.
The trailer air supply knob is usually:
18.
In case of emergency stops, drivers should:
19.
If you need to make an emergency stop, you should brake so that you can ________.
20.
At what level will the low air warning usually take effect?
21.
Stab braking should only be used:
22.
What does the air compressor governor control?
23.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
24.
To avoid damaging the brakes, what should you never do while the spring brakes are applied?
25.
To test the parking brake you should _______.