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
The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:
An air brake system is fully charged at what psi?
The application pressure gauge shows how much air pressure you:
To make sure that the spring brakes come on automatically, do all of the following except:
When testing air leakage rates for single vehicles, initial loss rate should be less than:
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
When you need to depress the brakes harder and harder just to maintain the same speed this means ______.
When your brake's main air pressure is lost ________.
To check the free play of manual slack adjusters of S-cam brakes, you should park on:
If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
The manual adjustment of automatic slack adjusters is:
What tells the driver how much air pressure is in the air tanks?
Repeatedly partially increasing and pressing the brake pedal may result in:
With air brake vehicles, the parking brakes should be used:
The braking power of the spring brakes ______.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
How does the antilock brake system benefit the driver?
Automatic adjusters should ________.
Why should air tanks be drained completely?
On large buses low pressure warning devices usually signal at ______.
What is used to put alcohol into the system and reduce ice risk?
What brake system uses part of the service and parking brake systems to stop the vehicle in the event of a brake system failure?
Typically, at what psi does the air compressor governor stop the compressor from pumping air?
Manual air tank drains require: