Air Brakes Endorsement Test | Indiana 2025 #2

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.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . Air brakes are:

An effective tool for stopping large vehicles.

Prohibited on large vehicles.

Only effective in poor weather.

A tool to improve fuel efficiency.

As long as the brakes are properly maintained, using air brakes is a safe and effective method of stopping large, heavy vehicles.

2 . A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.

Green

Yellow

Orange

White

Anti-Lock Braking System (ABS) malfunction lamps are usually yellow. Even if the ABS isn't working properly, a driver will still have access to the vehicle's usual braking functions.

3 . The safety valve located on the first tank opens:

Regularly.

If there is too little pressure.

If there is too much pressure.

After every stop.

In an air brake system, the first tank that receives compressed air has a safety valve that releases air if the pressure gets too high. It is usually set to open at 150 psi. If the valve must open, there is a fault in the system that should be repaired by a mechanic.

4 . Failing to drain the tanks in an air brake system can result in:

Water freezing and causing brake failure.

Squishy brakes.

Too much air collecting.

Too much fuel being carried.

In an air brake system, the air storage tanks must be drained to remove accumulated water and compressor oil. Failing to do this can cause damage. For example, water that has built up in the system could freeze in cold weather and cause brake failure.

5 . Brakes may get out of adjustment:

If they are too hot.

In colder weather.

If they are used.

If they get wet.

Brakes can get out of adjustment quickly, especially if they are used to the point of overheating. Brake adjustment should be checked frequently.

6 . On newer vehicles, how do you put on the parking brake?

Move a lever to the right.

Push in the yellow, diamond-shaped knob.

Pull out the yellow, diamond-shaped knob.

Pull up on the steering column.

On newer vehicles with air brakes, the parking brake is controlled by a yellow, diamond-shaped knob. The knob is pulled out to set the brakes, and pushed in to release them.

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2025 Indiana | Frequently Asked Questions

To secure a CDL Bus endorsement in Indiana, you must first possess a Commercial Driver's License (CDL). Next, pass the Passenger Vehicles endorsement test, which covers topics like vehicle inspection, loading/unloading passengers, and emergency procedures. Finally, complete a driving test in the type of vehicle you'll be driving. You must also pass a background check and physical examination.

To obtain a Commercial Driver's License (CDL) Bus license in Indiana, you must be at least 21 years old, possess a valid Indiana driver's license, and pass a vision test. You'll need to complete a written knowledge test, obtain a CDL learner's permit, and pass a skills test in the type of vehicle you wish to drive. Additionally, you must pass a DOT physical examination.

Yes, specific training is necessary for a CDL Bus endorsement in Indiana. You must complete a commercial driver's education program approved by the Indiana Bureau of Motor Vehicles. This program includes both classroom instruction and behind-the-wheel training. Additionally, you must pass a written test and a skills test that includes pre-trip vehicle inspection, basic vehicle control, and on-road driving.

CDL Bus licenses in Indiana fall under three main classifications: Class A, B, and C. Class A is for vehicles with a combined weight over 26,001 pounds where the vehicle being towed is over 10,000 pounds. Class B is for single vehicles over 26,001 pounds. Class C is for vehicles designed to transport 16 or more passengers (including the driver) or hazardous materials.

No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle used for the test must match the class and type of vehicle you plan to drive with your CDL. For a bus endorsement, you need to test in a bus of the appropriate size and type. Some training schools provide vehicles for testing.

During the CDL Bus driving test, your ability to safely operate the bus is evaluated. This includes pre-trip vehicle inspection, basic vehicle control (like turning, backing up, and stopping), and on-road driving. On-road skills include navigating intersections, railway crossings, curves, and various types of traffic conditions. You'll also be tested on procedures for loading and unloading passengers.

Yes, for a CDL Bus endorsement in Indiana, you must pass a Department of Transportation (DOT) medical examination. This assessment ensures you are physically capable to operate a commercial vehicle safely. The exam covers various health aspects including vision, hearing, blood pressure, and checks for any conditions that might impair your ability to drive like epilepsy or heart disease.

No, it's not permissible to transport passengers in Indiana without a valid CDL Bus endorsement. The endorsement is required by law for drivers who wish to operate a vehicle designed to carry 16 or more passengers, including the driver. Driving without the proper endorsement can result in severe penalties, including fines and suspension of your CDL.

The CDL Bus endorsement can be added to your existing commercial driver's license in Indiana. You don't need to apply for a new license. However, you will need to pass a knowledge test and a skills test in a vehicle representative of the class of bus you wish to drive, and meet all physical and medical requirements.

Yes, there are restrictions for drivers with a CDL Bus endorsement in Indiana. Drivers must maintain a clean driving record, pass periodic physical exams, and comply with federal hours-of-service regulations. They cannot drive under the influence of alcohol or drugs. Additionally, school bus drivers need a special endorsement and must pass a background check.