Free Indiana CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 IN commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
IN CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
2.
During normal driving, spring brakes are usually held back by:
3.
A low pressure warning signal could be __________.
4.
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.
5.
The most important thing to do when a low air pressure warning comes on is:
6.
To test the vehicle's service brakes, move the vehicle:
7.
The main factor in causing brake fade is:
8.
With air brake vehicles, the parking brake should be used:
9.
The type of brakes that clamp the rotor between the brake shoes is:
10.
What is the purpose of an antilock braking system (ABS)?
11.
What happens when your brake drums get very hot?
12.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than _____ of the width of the friction area.
13.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
14.
The emergency spring brake release knob is:
15.
The S-cam:
16.
To stop the vehicle, the brake shoes and linings are pushed against:
17.
Controlled braking is only possible _________.
18.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
19.
Which of the following helps the stop light switch work?
20.
The air compressor is connected to the engine through ______.
21.
Initial air leakage rate for combination vehicles should be:
22.
If the air compressor has its own oil supply you should do what before driving?
23.
You should use the parking brake _____________.
24.
Air tanks should be drained:
25.
What happens when pressure is put on the air brakes?