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.
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks fall below ____ psi.
2.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
3.
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.
4.
If your truck has a properly functioning dual air brake system and minimum size air tanks, the air pressure should build up from 85 to 100 psi within how many seconds?
5.
The ____ shows how much pressure is in the air tanks.
6.
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ________ brake system.
7.
Spring brakes will generally come on at:
8.
When the safety valve releases air this indicates ___________.
9.
What should a driver do when the low air pressure warning signal comes on?
10.
Air governor cut-out should be at around:
11.
"Some air brake systems have an alcohol evaporator. What may happen if you don’t keep the proper level of alcohol?"
12.
Why is manually adjusting automatic slack adjusters dangerous?
13.
Air braking takes more time than hydraulic braking because:
14.
After the initial pressure drop, air leakage for combination vehicles should be less than:
15.
The trailer air supply knob is usually:
16.
Under normal braking conditions, the vehicle:
17.
The brake pedal in an air brake system _______.
18.
Pushing the brake pedal down harder __________.
19.
The service brake system ________.
20.
If air supply drops when driving, the tractor protection valve ________.
21.
The parking brake should be used:
22.
What is the purpose of a supply pressure gauge?
23.
Vehicles with air brakes have pressure gauges connected to the _______.
24.
To test the parking brake you should _______.
25.
If your brakes are wet, what should you do to dry them quicker?