Air Brakes #2
Air Brakes Endorsement Test | Indiana 2025 #2 Page 4 of 4
Train for FREE online with our Indiana CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IN Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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19 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.
100 psi
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
20 . Foundation brakes are used:
At each wheel.
Foundation brakes are used at each wheel. The most common type is the S-cam drum brake.
21 . If one air system in a dual air brake system is very low on pressure:
Lights on the outside of the tractor will flash.
In a dual air brake system, if one of the air systems gets very low on pressure, either the front or rear brakes will not be operating fully. You should bring your vehicle to a safe stop and have the air system repaired.
22 . Truck tractors with air brakes that were built on or after March 1, 1997 are equipped with:
Anti-Lock Braking Systems (ABS).
Truck tractors with air brakes that were manufactured on or after March 1, 1997 are required to be equipped with Anti-Lock Braking Systems (ABS). ABS is required in any other type of vehicle with air brakes that was manufactured on or after March 1, 1998.
23 . Brakes can get out of adjustment:
If brakes on one side are used more often than brakes on the other side.
Brakes are particularly prone to getting out out adjustment if they are hot. Use proper braking techniques to avoid letting your brakes overheat.
24 . What does the air compressor governor do?
Controls the temperature of the air leaving the air storage tanks.
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
25 . What color is the low air pressure warning light?
Purple
A low air pressure warning signal is required in vehicles with air brakes. The warning light is usually red and may be accompanied by a buzzer.
See the exact questions that will be on the 2025 Indiana DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2025 Indiana | Frequently Asked Questions
A CDL Class A license in Indiana is defined as a commercial driver's license that permits the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed exceeds 10,000 pounds. This includes tractor-trailers, truck and trailer combinations, and flatbeds.
A Class A Commercial Driver's License (CDL) in Indiana allows you to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. You can drive vehicles with a Gross Vehicle Weight Rating (GVWR) exceeding 26,001 pounds, provided the GVWR of the vehicle being towed is more than 10,000 pounds.
To obtain a Class A CDL license in Indiana, you must be at least 18 years old (21 for interstate driving), possess a valid Indiana driver's license, pass a vision test, and obtain a medical clearance. You must also pass a written knowledge test and a skills test that includes a pre-trip vehicle inspection, a basic vehicle control test, and an on-road driving exam.
In Indiana, you must be at least 18 years old to qualify for a Class A CDL license for intrastate driving (within Indiana only). However, to drive across state lines or handle hazardous materials, you must be at least 21 years old.
Specific endorsements aren't required for a Class A CDL, but they can enhance your license. Endorsements allow you to drive certain types of vehicles or carry specific types of cargo. Examples include a Tank Vehicle (N) endorsement, a Passenger (P) endorsement, or a Hazardous Materials (H) endorsement. Each requires additional testing.
The Class A CDL skills test in Indiana encompasses three main components: a pre-trip vehicle inspection to assess your ability to determine if your vehicle is safe to drive, a basic vehicle control test to evaluate your handling of the vehicle, and an on-road driving exam to test your practical driving skills in various traffic situations.
Yes, Class A CDL license holders in Indiana may face certain limitations. These can include restrictions based on the driver's medical condition, the type of vehicle used during the skills test, and the absence of certain endorsements. For instance, without a passenger or school bus endorsement, a driver cannot operate those specific vehicles.
Yes, it's possible to take the written Class A CDL test in languages other than English. The Indiana BMV offers the test in fourteen different languages. These include Spanish, Arabic, Chinese, French, and others. However, the Federal Motor Carrier Safety Administration requires a basic understanding of English to drive commercial vehicles.
Yes, in Indiana, you can request accommodations for the Class A CDL written test if you have a disability. The Bureau of Motor Vehicles (BMV) provides assistance to ensure the test is accessible to everyone. However, you must provide necessary documentation and notify the BMV in advance about your specific needs.
Yes, if you don't pass the Class A CDL written test in Indiana, you can retake it. However, you must wait until the next day to do so. If you fail the test three times, you will need to wait 2 weeks before your next attempt. Keep in mind each attempt comes with a fee.
