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.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
2.
All air brake equipped vehicles have:
3.
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.
4.
If your vehicle has an alcohol evaporator, it is there to:
5.
Why drain water from compressed air tanks?
6.
If you must make an emergency stop, you should brake so you:
7.
The application pressure gauge shows how much air pressure you:
8.
When the safety valve releases air this indicates ___________.
9.
When parking a vehicle with a modulating control valve ________.
10.
Spring brakes will come on automatically, but the parking brake can also be applied:
11.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
12.
When brakes are applied, the brake shoes will press against the:
13.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
14.
How should you check that your service brakes are working properly?
15.
To stop the vehicle, the brake shoes and linings are pushed against:
16.
Automatic air tanks _______.
17.
On newer vehicles what color is the parking brake knob?
18.
In dual air systems, how long should it take air pressure to build 85 to 100 psi?
19.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
20.
Spring brakes are applied:
21.
What is the purpose of a supply pressure gauge?
22.
What is a wig wag ?
23.
Vehicles with ABS have malfunction lamps that are what color?
24.
In a dual air brake system, one system will typically control the rear brakes, and the other:
25.
If your brakes are wet, what should you do to dry them quicker?