Air Brakes #1
Air Brakes Endorsement Test | North Dakota 2025 #1 Page 4 of 4
Train for FREE online with our North Dakota 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 ND 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 . Which part of the truck is the air compressor connected to?
The door latch
In an air brake system, the air compressor is connected to the engine through gears or a v-belt.
20 . 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.
21 . The ____ tells a driver how much pressure is in the air tanks.
Drum brake
A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.
22 . If using the spring brakes while hauling a heavy load, a complete stop will:
Damage the brakes.
Spring brakes will activate in a vehicle with air brakes if the pressure in the air system becomes too low. A heavily loaded vehicle will take a long time to stop when using only the spring brakes because the spring brakes do not work on all axles.
23 . A low air pressure warning signal should activate:
When tank pressure falls below 5 psi.
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
24 . Using an Anti-Lock Braking System (ABS):
Provides more control.
An Anti-Lock Braking System (ABS) helps prevent wheel lockup during hard braking. While it provides better control, it does not necessarily shorten a vehicle's stopping distance.
25 . Friction inside a brake drum is caused when the brake shoes and linings:
Create excess heat.
Friction inside a brake drum is caused when the brake shoes and linings push against the inside of the drum. The friction in the drums will slow and stop the vehicle.
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2025 North Dakota | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in North Dakota, you must first have a CDL license. Then, pass the Hazardous Materials Endorsement Knowledge Test at a North Dakota Department of Transportation office. After passing, you'll need to complete a TSA background check. Once cleared, your Hazmat endorsement will be added to your CDL license.
To obtain a CDL Hazmat license, you must first have a valid Commercial Driver's License (CDL). You also need to be at least 21 years old. Additionally, you must pass the Hazardous Materials Endorsement Knowledge Test, and complete a TSA background check. U.S. citizenship or permanent legal residency is also required.
When applying for a CDL Hazmat endorsement, you must provide proof of U.S. citizenship or legal presence, such as a U.S. passport or birth certificate. You will also need your current CDL. Additionally, you must complete the TSA's Hazardous Materials Endorsement Threat Assessment Program, which includes fingerprinting and a background check.
Yes, there is a dedicated written test for the CDL Hazmat endorsement in North Dakota. This test focuses on the knowledge necessary to handle hazardous materials safely, including loading and unloading, use of placards, driving and parking rules, and emergency response procedures. It is required to pass this test to obtain the endorsement.
The written test for the CDL Hazmat endorsement covers a variety of subjects related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, knowing placarding rules, and understanding the rules for loading and unloading hazardous materials. It also covers emergency response procedures in case of a hazardous material incident.
Yes, there are extra charges involved in acquiring a CDL Hazmat endorsement. You'll need to pay for the TSA's Hazardous Materials Endorsement Threat Assessment Program, which costs about $86.50. Additionally, some states may charge a fee for the endorsement itself, which varies by state. Always check with your local DMV for the most accurate information.
Yes, obtaining a CDL Hazmat endorsement requires passing a background check and security clearance. This involves a review of your criminal history, immigration status, and mental health information. The Transportation Security Administration (TSA) conducts this check to ensure the safety and security of hazardous materials transportation.
Yes, specialized training is required for the CDL Hazmat endorsement. It involves passing a written test about transporting hazardous materials. This test covers topics such as loading and unloading hazardous materials, driving and parking rules, and emergency response procedures. Once you pass the test, you'll receive a certificate of training, which is mandatory to obtain the endorsement.
No, you cannot transport hazardous materials without a valid CDL Hazmat endorsement in the United States. This endorsement is required by federal regulations to ensure the safe transportation of hazardous materials. Driving without this endorsement when required can result in serious penalties, including fines and suspension of your commercial driver's license.
You can add a Hazmat endorsement to your current CDL. It doesn't require a new CDL application. However, you'll need to pass a written test and undergo a TSA background check. Once you pass these, the Hazmat endorsement will be added to your existing CDL license.
