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 Tank endorsement in North Dakota, you must first have a Commercial Driver’s License (CDL). After that, study the tank vehicle section of the ND CDL manual, then take the written tank vehicle endorsement test at a North Dakota Department of Transportation office. Passing this test will give you the tank endorsement on your CDL.
To obtain a CDL Tank license, it's essential to have a Commercial Driver’s License (CDL) first. Then, you need to study and understand the tank vehicle section of the CDL manual. Finally, you must pass the written tank vehicle endorsement test at a Department of Transportation office in your state.
While specific training or experience isn't mandatory by law for a CDL Tank endorsement, it's highly recommended. Understanding how to handle large, often hazardous, liquids is crucial for safety. Studying the tank vehicle section of the CDL manual is a must. You'll also need to pass a written tank vehicle endorsement test at a Department of Transportation office.
Yes, to obtain a CDL Tank endorsement in North Dakota, you must pass a specific written knowledge test that covers the safe operation of a commercial tank vehicle. This test is in addition to the general CDL written exam. The endorsement test typically includes questions about inspecting tank vehicles, driving tank vehicles, and safe driving rules.
The written test for the CDL Tank endorsement covers a variety of topics specific to tank vehicles. These include inspecting tank vehicles, driving tank vehicles, and safe driving rules. It also covers aspects like the effects of liquid surge on handling, special considerations for loading and unloading, and understanding outage or ullage to prevent overfilling.
The CDL Tank endorsement assessment doesn't involve a specific skills or maneuvers test. However, the written test evaluates knowledge on handling liquid surge, driving tank vehicles safely, inspecting tank vehicles, and understanding how to load and unload. It's essential to be familiar with these aspects to pass the assessment.
Yes, drivers with a CDL Tank endorsement must adhere to specific rules and regulations. They must understand how to handle the high center of gravity in tank vehicles and the effects of liquid surge. They're also limited to driving only those commercial vehicles that a tank endorsement covers, and they must comply with all federal and state transportation regulations.
No, drivers cannot legally transport liquid or gas materials without a valid CDL Tank endorsement in North Dakota. This endorsement is specifically designed to ensure that drivers have the necessary knowledge and skills to transport these materials safely. Violating this requirement can result in severe penalties, including fines and suspension of the CDL.
Yes, you can add a CDL Tank endorsement to your existing commercial driver's license in North Dakota. You don't need to apply for a new license. However, you will need to pass the Tank Vehicle written test and pay the required fee. Always check with your local DMV for the most accurate information.
Yes, handling hazardous materials with a CDL Tank endorsement in North Dakota requires additional certification. Drivers must obtain a Hazardous Materials (HazMat) endorsement. This involves passing a written test and a TSA background check. These measures ensure the driver is knowledgeable and trustworthy to transport such materials safely.
