Air Brakes #2
Air Brakes Endorsement Test | North Carolina 2025 #2 Page 2 of 4
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 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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7 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
8 . The most common type of foundation brake used is the:
P-cam disc brake.
The most common type of foundation brake is an s-cam drum brake.
9 . Where is the safety relief valve usually located?
On the dashboard
An air brake system's safety relief valve is located in the tank that is first to receive air from the compressor.
10 . When traveling down a steep downgrade:
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.
11 . Failing to drain the tanks in an air brake system can result in:
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.
12 . You should test the low pressure warning signal by:
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.
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2025 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.
