Air Brakes Endorsement Test | Indiana 2025 #1

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 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.

10 psi

25 psi

50 psi

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.

2 . If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?

Loose

Tight

Cracked

Bumpy

When inspecting a vehicle with air brakes that has a belt-driven air compressor, you should check the condition and tightness of the belt. It should be in good condition.

3 . What does the air compressor governor do?

Controls when the air compressor pumps air into the air storage tanks.

Controls how quickly air leaves the air storage tanks.

Controls the temperature of the air entering the air storage tanks.

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.

4 . Brakes can get out of adjustment:

If they are hot.

During the winter.

If they are used at all.

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.

5 . Service brakes should:

Be tested once a month.

Only be tested by a trained mechanic.

Be tested before every trip.

Before driving, you should always verify that your service brakes are in good working order. Testing the brakes before a trip allows you to locate any problems before you need to brake while on the road.

6 . Which type of brakes do most heavy-duty vehicles have?

Air brakes

Solid brakes

Liquid brakes

Gravity brakes

For safety, most heavy-duty vehicles are equipped with dual air brake systems.

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2025 Indiana | Frequently Asked Questions

To acquire a CDL Passenger endorsement in Indiana, you must first have a Commercial Driver's License (CDL). Then, you need to pass the Passenger Transport Test at a Bureau of Motor Vehicles (BMV) branch. The test covers topics like vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.

To obtain a CDL Passenger license in Indiana, you must be at least 21 years old, have a valid regular driver's license, pass a vision test, and complete a medical examination. You must also pass a written knowledge test on operating a passenger vehicle and successfully complete the skills test in the type of vehicle you will be driving.

While Indiana doesn't specifically require training for a CDL Passenger endorsement, it's beneficial to have practical experience and knowledge about operating a commercial vehicle. Training can help prepare you for the written knowledge test and the skills test. Experience driving similar vehicles can also be advantageous. Remember, you'll need to pass both tests at a BMV branch.

Yes, in addition to the general CDL test, you must pass the Passenger Transport written test to receive a CDL Passenger endorsement in Indiana. This test covers specific rules and safety regulations related to transporting passengers. If you plan to drive a school bus, you may also need to pass a School Bus endorsement test.

During the CDL Passenger endorsement skills test in Indiana, you'll need to demonstrate your ability to inspect your vehicle, check safety equipment, and ensure passenger comfort. You'll also need to show your skills in managing space around the vehicle, stopping and starting, turning, merging into traffic, and backing up safely. Measures for emergency situations will also be assessed.

No, you cannot legally transport passengers in Indiana without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to operate a vehicle designed to carry 16 or more passengers, including the driver. Driving without the proper licensing can result in serious penalties, including fines and potential suspension of your driving privileges.

Yes, you can add the CDL Passenger endorsement to your existing Commercial Driver's License (CDL). You don't need a new license application. However, you must pass the Passenger Transport written test and, if applicable, the skills test. Once you pass, the endorsement will be added to your current CDL.

Yes, there are specific restrictions for drivers with a CDL Passenger endorsement in Indiana. These include not being able to operate a vehicle if their blood alcohol concentration is 0.04% or higher, not having any trace of a controlled substance in their system, and not committing any traffic violations while operating a commercial vehicle. Violating these can result in disqualification or suspension of the endorsement.

Yes, in Indiana, you must be at least 18 years old to get a CDL for intrastate driving (within state lines) and at least 21 years old for interstate driving (across state or national borders). These age requirements also apply to obtaining a CDL Passenger endorsement. You must also meet all other general CDL requirements.

With a CDL Passenger endorsement, you are eligible to operate vehicles such as buses, shuttles, and vans that are designed to carry 16 or more passengers, including the driver. This endorsement also allows you to drive smaller vehicles that carry fewer passengers. However, remember that specific vehicle types might require additional endorsements, like a School Bus endorsement for school buses.