Knowledge Test Class B

This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the.. Read More

This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). 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 North Carolina Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving.. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.

Number of Question
Passing Score

1. Which of the following is not a crime that would disqualify an applicant from a hazardous materials endorsement?

Explanation
There are a number of crimes that will disqualify a person from receiving a hazardous materials endorsement for seven years. Among these offenses are arson, robbery, and crimes of dishonesty, fraud, or misrepresentation. More serious crimes, such as murder, result in a lifetime disqualification.

2. To receive a hazardous materials endorsement, an applicant will be required to supply:

Explanation
To obtain a hazardous materials endorsement, you will be required to submit your fingerprints and undergo a TSA background check.

3. Poor weight balance:

Explanation
Poorly balanced cargo can cause a vehicle to be difficult to handle. Keep weight distribution in mind when loading cargo.

4. The use of a hand-held mobile device while driving is:

Explanation
Using a hand-held mobile telephone while operating a CMV is both illegal and dangerous.

5. What is tire load?

Explanation
Tire load is the maximum safe weight that can be carried by a tire at a specified pressure. This number is stated on the side of each tire.

6. What does the vehicle inspection report do?

Explanation
A vehicle inspection report keeps the carrier informed about any problems that need to be fixed.

7. Convex mirrors:

Explanation
Many large vehicles have curved, convex mirrors. Convex mirrors allow drivers to see a wider area than flat mirrors. However, they also make objects seem smaller and farther away than they really are.
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