Air Brakes Endorsement Test | North Carolina 2024 #1

Train for FREE online with our North Carolina 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 NC Class A/Class B driver license in 2024, 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 . When traveling down a steep downgrade:

The air brakes should be used.

The vehicle should be placed in a low gear and the driver should use engine braking.

The driver should continually downshift instead of using the brakes.

On long and/or steep downgrades, you should primarily use engine braking to control the speed of your vehicle. Use your brakes only as a supplement to this effect.

2 . You should test the low pressure warning signal by:

Turning on the engine and applying the trailer hand brake.

Rapidly pressing and releasing the brake pedal.

Removing wheel chocks and disengaging the parking brake.

It is essential that your low pressure warning light functions properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.

3 . 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.

4 . Pressing and releasing a brake pedal unnecessarily can:

Release air faster than it can be replaced.

Add more air to the braking system.

Make the brake pedal more sensitive.

Create a loud noise.

In an air brake system, pressing and releasing the brake pedal unnecessarily can release air from the braking system faster than the compressor can replace it.

5 . Brake fading is caused when:

Brakes are not used often enough.

Brakes overheat.

Brakes are too cold.

Brakes are wet.

Using the brakes excessively will cause them to overheat, making them less effective. This is referred to as "fading."

6 . Some air brake systems use alcohol:

To reduce the risk of ice forming in air brake valves.

To make the compressor run more efficiently.

To lubricate parts of the braking system.

To reduce the risk of rust forming on air brake valves.

Some air brake systems contain an alcohol evaporator. This device introduces alcohol into the braking system to inhibit the formation of ice.

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2024 North Carolina | Frequently Asked Questions

To acquire a CDL Hazmat endorsement in North Carolina, you need to first have a CDL license. Then, pass the Hazmat Knowledge Test at a DMV office. You also need to complete a federal security threat assessment, which includes fingerprinting and a background check. Lastly, pay the required fees. Keep in mind that requirements may vary slightly depending on specific circumstances.

To obtain a CDL Hazmat license in North Carolina, you must first possess a valid CDL. You must then pass a written Hazmat knowledge test and a TSA background check. You should also be able to read and speak English well enough to converse, understand traffic signs, respond to official inquiries, and make entries on reports and records.

When applying for a CDL Hazmat endorsement in North Carolina, you'll need your current CDL, proof of U.S. citizenship or permanent legal residency (like a passport or birth certificate), and social security card. You will also need to complete and pass a TSA background check and provide fingerprints. Lastly, you'll need to pass the Hazmat endorsement knowledge test.

Yes, there is a dedicated written test for obtaining the CDL Hazmat endorsement in North Carolina. This test assesses your knowledge of hazardous materials regulations, safety procedures, and emergency response techniques. You must pass this test in addition to the standard CDL written and skills tests to receive the Hazmat endorsement.

The written test for the CDL Hazmat endorsement covers a range of subjects. These include identifying hazardous materials, understanding shipping papers, using placards and labels, handling emergencies and incidents, loading and unloading hazardous materials, and safe driving practices. The test also covers federal and state regulations for transporting hazardous materials.

Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement in North Carolina. In addition to the standard CDL fee, you'll need to pay for a TSA background check and fingerprinting services. The costs can vary, so it's best to check with your local DMV and TSA offices for the most accurate and up-to-date fees.

Yes, background checks are mandatory for the CDL Hazmat endorsement. The Transportation Security Administration (TSA) conducts a security threat assessment, which includes a criminal history records check and a review of specific databases to ensure the applicant doesn't pose a security threat. This process is essential to ensure the safety of hazardous material transportation.

Yes, specialized training is necessary for the CDL Hazmat endorsement in North Carolina. Applicants must pass a written test that covers hazardous materials regulations and safety procedures. In addition, they must undergo a TSA security threat assessment, which includes a background check and fingerprinting. The endorsement is not granted until all these requirements are met.

No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in North Carolina. The endorsement ensures that drivers understand the safety protocols and regulations for handling hazardous materials. Driving without the required endorsement can result in significant fines and penalties, including loss of your commercial driver's license.

Yes, you can add the CDL Hazmat endorsement to your current CDL license in North Carolina. You don't need to apply for a new license. However, you'll need to pass the Hazmat knowledge test, undergo a TSA background check, and pay the necessary fees to obtain the endorsement. Always check with your local DMV for the most accurate information.