Free Indiana CDL Air Brakes Practice Test 2023

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 2021 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
When inspecting air brakes:
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
All air brake equipped vehicles have:
Air tanks need to be drained ______.
How far should manual slack adjusters move before they need to be adjusted?
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?
When you need to apply more pressure to help your brakes work normally effectively, this means that your brakes are fading. Which of the following can cause fading brakes?
When you release the brakes and reduce the air pressure what makes up for that air loss?
In most newer vehicles, the parking brake control will be:
The parking brake knob is usually:
If your truck has a dual air brake system, and one of the systems is low on pressure:
When checking the air pressure buildup, pressure should build:
The air compressor governor controls:
If air pressure is not built up within the correct amount of time, then:
The most common problem found in roadside inspections is:
At what level will the low air warning usually take effect?
Why does a heavily loaded vehicle need a longer distance to stop?
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
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:
How are brakes designed?
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
Stab braking should only be used:
Vehicles with ABS have malfunction lamps that are what color?
Water and oil _______.
What is an alternative name for a brake pedal?