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. Each question has four answer choices. To pass, applicants must answer 40 questions correctly. Test questions come from the New York State Commercial Motor Vehicle Drivers Handbook. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, 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. When checking tire condition during the vehicle inspection, you should:

Explanation
When examining your tires during the vehicle inspection test, you should ensure that treads are evenly worn.

2. Which of the following is acceptable if found during a pre-trip inspection?

Explanation
When inspecting your tires, verify that there is tread depth of at least 4/32 of an inch in every major groove on the front tires and tread depth of at least 2/32 of an inch in grooves on the other tires. Be sure that your tires are not too worn, are not cracked, have proper air pressure, and are all equally sized.

3. A suspension system:

Explanation
Suspension systems receive weight capacity ratings, given by the manufacturers.

4. Which of the following is not a type of retarder?

Explanation
Retarders are mechanisms in some vehicles that help slow a vehicle and reduce the need for braking. The four basic types of retarders are exhaust, engine, hydraulic, and electric.

5. When you need to stop in an emergency, you should:

Explanation
If you need to make an emergency stop, you can use either the controlled braking method or the stab braking method. It's important to brake in a way that keeps your vehicle traveling in a straight line while still allowing you to turn, if necessary.

6. If a roadway is covered by fog, it is best for you to:

Explanation
Driving in fog is always dangerous. If possible, you should always avoid driving under foggy conditions.

7. When driving, the steering wheel should be:

Explanation
Hold the steering wheel firmly with both hands, placing them on opposite sides of the wheel.
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