Knowledge Test Class A

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.. Read More

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 three or four possible answer choices. Test questions come from the Nevada Commercial Driver License Manual. 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.

Number of Question
Passing Score

1. When starting from a stop:

Explanation
To avoid hitting anything behind you, make sure that your vehicle does not roll back when you start from a complete stop.

2. When you are driving while drowsy, you should:

Explanation
The only effective way to deal with drowsiness while driving is to stop and sleep. Caffeine or other stimulant drugs may help you stay awake, but they will not keep you alert. You will likely end up being even more tired when the artificial stimulants begin to wear off.

3. Mirrors should be:

Explanation
When driving, you should regularly check your mirrors, both to be aware of traffic and to check for problems on your own vehicle.

4. How much water needs to be on the surface of a road for a vehicle to hydroplane?

Explanation
Hydroplaning is an effect in which a vehicle's tires lose traction with the surface of the road and instead glide along a layer of water. There does not have to be much water on the road for this to occur.

5. If you plan to transport hazardous materials, you must pass which endorsement test?

Explanation
You must have a hazardous materials endorsement to drive a vehicle of any size that is used to transport defined classes of hazardous materials.

6. Which of the following is not a reason to use your mirrors?

Explanation
While regular mirror checks should be part of your normal driving routine, checking your mirrors is especially important when turning, changing lanes, merging, and performing tight maneuvers.

7. When checking windshield wiper blades, they should be:

Explanation
When inspecting your vehicle, you should check the wiper blades for damage, stiff rubber, and proper securement. Clean the blades if they are dirty.
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