Knowledge Test Class A

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This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question..

This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Test questions come from the North Dakota Commercial Driver Guide. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.

Passing grade:

What is another name for front-end header boards?

Explanation
Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.

While driving, if it is discovered a vehicle's ABS is not working, the driver should:

Explanation
If an Anti-Lock Braking System (ABS) is not working, the vehicle's basic braking functions are still intact. The driver should continue to drive and brake in a normal fashion.

Which of the following is not an example of a distracted person that motorists should be worried about?

Explanation
You should be cautious when you are near people who are not paying attention to the road. Be wary of drivers who are engaged in conversation with passengers, children near the road, and road workers.

If one air system in a dual air brake system is very low on pressure:

Explanation
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.

Loading cargo:

Explanation
Regardless of who has loaded cargo onto a vehicle, the driver is responsible for the safety of the cargo.

If you need to travel down a hill, you should switch into a lower gear:

Explanation
Always downshift before beginning to drive downhill. Forcing an automatic transmission into a lower gear at a high speed could damage the transmission and also lead to a loss of ability to engine brake. Drive at a speed that will allow you to control your vehicle without overusing your brakes. When determining a safe speed to drive, you should take into account the steepness of the grade, the length of the grade, the weight of your vehicle, road conditions, and weather conditions.

A vehicle should be equipped with all of the following, except:

Explanation
Commercial vehicles should always carry the proper emergency equipment. Be sure your vehicle is equipped with at least one fire extinguisher; spare electrical fuses, unless the vehicle is equipped with circuit breakers; and warning devices for parked vehicles, such as warning triangles, fuses, or liquid burning flares.
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