Air Brakes Endorsement Test | North Dakota 2025 #1

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.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . Emergency brakes are:

Not required on trucks.

Only required on trailers.

Required on tractors.

Only required when transporting hazardous materials.

All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.

2 . The safety valve located on the first tank opens:

Regularly.

If there is too little pressure.

If there is too much pressure.

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.

3 . In a vehicle with dual air brakes, what happens if one system is low on pressure?

The air from the other system will be used to supplement the system with the low pressure.

The front or rear brakes may not work properly.

All brakes will be inoperable.

The low system will use an auxiliary system to fill the tank.

In a dual air brake system, if one of the air systems gets very low on pressure, either the front or rear brakes will not be operating fully. You should bring your vehicle to a safe stop and have the air system repaired.

4 . Dollies equipped with ABS are required to have malfunction lamps located where?

On the rear

On the left side

On the front

On the top

A dolly equipped with an Anti-Lock Braking System (ABS) is required to have a yellow malfunction lamp located on its left side.

5 . To inspect slack adjusters on S-cam brakes, you need to:

Park on a hill and test the brakes.

Put on gloves and push in the slack adjusters.

Remove the drum and look inside.

Chock the wheels and disengage the parking brake.

Check each slack adjuster after parking on level ground, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.

6 . Braking mechanisms are located ____ a brake drum.

Outside

Inside

Next to

On top of

Drum brakes are attached to the wheels and located on the axles of a vehicle. The braking mechanisms that cause the vehicle to stop can be found inside of a drum brake.

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2025 North Dakota | Frequently Asked Questions

To secure a CDL Bus endorsement in North Dakota, you must first hold a valid Commercial Driver's License (CDL). Then, you need to pass a Passenger Vehicles endorsement test which includes topics like vehicle inspection, loading and trip start, on the road driving, after-trip vehicle inspection and prohibited practices. Lastly, you must pass a skills test in a passenger vehicle.

To obtain a CDL Bus license in North Dakota, you must be at least 18 years old, possess a valid driver's license, and pass a vision test. You'll also need to pass a general knowledge test, a passenger transport test, and a skills test that includes pre-trip vehicle inspection, basic vehicle control, and on-road driving. Additionally, you must pass a medical examination.

In North Dakota, specific training for a CDL Bus endorsement is not mandated by law, but it's highly recommended. This training typically covers vehicle inspection, safe operation practices, and emergency procedures. Also, many employers require some experience driving similar vehicles. Practical experience is necessary to pass the skills test, which includes pre-trip inspection, basic vehicle control, and on-road driving.

CDL Bus licenses fall under Class B or Class C. Class B is for vehicles designed to transport 24 passengers or more, including the driver. Class C is for vehicles designed to carry 16 to 23 passengers, including the driver. Each class requires different tests and endorsements. For instance, a School Bus (S) endorsement is needed to drive a school bus, while a Passenger (P) endorsement is needed for transporting passengers.

No, you cannot use your personal vehicle for the CDL Bus driving test in North Dakota. The vehicle you use for the test should represent the type of vehicle you plan to drive once you receive your CDL. Therefore, it should be a commercial bus similar to the one you'll be operating.

During the CDL Bus driving test in North Dakota, the examiner will evaluate skills such as pre-trip vehicle inspection, basic vehicle control, and on-road driving. You may be asked to perform maneuvers like backing up, making sharp turns, stopping at controlled intersections, merging into traffic, and navigating through railroad crossings.

Yes, there are additional medical prerequisites for a CDL Bus endorsement. Applicants must pass a Department of Transportation (DOT) physical examination every 24 months. The examination evaluates vision, hearing, blood pressure, and checks for diabetes and other potential health conditions. The results are reported on a Medical Examination Report Form, which must be submitted to the North Dakota Department of Transportation.

No, it's not permissible. In North Dakota, driving a commercial vehicle designed to transport 16 or more passengers, including the driver, without a valid Commercial Driver's License (CDL) with a passenger (P) endorsement is illegal. Violating this can result in serious penalties including fines and suspension of your driving privileges.

Yes, the CDL Bus endorsement can be added to your existing CDL in North Dakota. You will need to pass the Passenger Transport Test and a skills test in a passenger vehicle. However, you don't need to apply for a new CDL. Remember to bring your current CDL and the appropriate fee when you go for your test.

Yes, there are restrictions for drivers with a CDL Bus endorsement in North Dakota. Drivers must not have more than one license, must be at least 21 years old for interstate driving, and must pass a physical examination every 24 months. Additionally, drivers are required to obey all traffic laws and regulations and maintain a clean driving record.