Air Brakes #2
Air Brakes Endorsement Test | North Dakota 2026 #2 Page 3 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 2026, 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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13 . 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.
14 . 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.
15 . Why do large vehicles use air brakes?
Air is free.
Air brakes are an effective and safe way of stopping large and heavy vehicles, as long as they are maintained and used properly.
16 . The safety valve located on the first tank opens:
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.
17 . 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.
18 . The application pressure gauge:
Shows the number of times the brakes have been used.
In an air brake system, the application pressure gauge shows how much air pressure is being applied to the brakes. Not all vehicles with an air brake system have this gauge.
2026 North Dakota | Frequently Asked Questions
To acquire a CDL Passenger endorsement in North Dakota, you must first have a valid CDL. Then, you'll need to pass the Passenger Transport Test, which covers the special skills and knowledge needed for safely transporting passengers. You may also need to pass a road test in a vehicle similar to the one you'll be driving.
To obtain a CDL Passenger license in North Dakota, you must be at least 21 years old, hold a valid CDL, pass a Passenger Transport written test, and successfully complete a road skill test in the type of vehicle you plan to drive. Additionally, you'll need to pass a physical exam and meet vision requirements.
While North Dakota does not explicitly require specific training to secure a CDL Passenger endorsement, it's highly recommended. Training can help you prepare for the Passenger Transport Test and a road skills test. Experience is not required, but understanding and skills gained from driving similar vehicles can be beneficial.
Yes, to obtain a CDL Passenger endorsement in North Dakota, you must pass a Passenger Transport written test. This test covers topics like vehicle inspection, loading and trip start, on the road and after-trip vehicle inspection. It's designed to ensure you have the knowledge to safely transport passengers.
During the CDL Passenger endorsement assessment in North Dakota, you'll need to demonstrate skills like safe driving practices, proper use of mirrors, executing turns and stops, and emergency procedures. You'll also need to show understanding of passenger safety rules, including proper loading/unloading procedures and use of emergency exits.
No, you cannot legally transport passengers in North Dakota without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to drive vehicles such as buses or vans that can transport 16 or more passengers, including the driver. Driving without the necessary endorsement could result in serious penalties.
Yes, you can add the CDL Passenger endorsement to your existing commercial driver's license in North Dakota. You don't need to apply for a new license, but you will need to pass the Passenger endorsement knowledge test and a skills test in the type of vehicle you wish to drive.
Yes, there are specific restrictions for drivers with a CDL Passenger endorsement in North Dakota. Drivers must not have a record of serious traffic violations, cannot operate a vehicle unless all passengers have their seat belts fastened, and cannot tow a trailer with a passenger vehicle. Additionally, they must comply with hours of service regulations to prevent driver fatigue.
In North Dakota, to be eligible for a CDL Passenger endorsement, you must be at least 21 years old. This is because federal regulations require drivers who transport passengers across state lines or who drive vehicles carrying hazardous materials to be at least 21. There are no upper age limits as long as the driver can pass the necessary medical examinations.
With a CDL Passenger endorsement in North Dakota, you are eligible to operate vehicles such as buses, shuttle vans, or any vehicle designed to transport 16 or more passengers, including the driver. This endorsement also allows you to drive vehicles used for transporting disabled or elderly individuals. However, additional endorsements may be required for certain vehicles, like school buses.