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 Wisconsin Commercial Driver’s Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles and Hazardous Maerials. 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. The best way to avoid glare at night from oncoming vehicles is to:

Explanation
To avoid being blinded by the lights of oncoming vehicles, you can glance to the right side of the road until the vehicle has passed.

2. Mirrors should be checked:

Explanation
Always check for traffic in your mirrors before changing lanes. Frequent mirror checks should be a part of your normal scanning routine.

3. When driving in fog, you should:

Explanation
If you must drive in fog, you should use your low beam headlights and fog lights, even during the daytime.

4. 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.

5. When driving, the steering wheel should be:

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

6. Joggers who are wearing headsets:

Explanation
Be careful around pedestrians, joggers, and cyclists who are wearing headphones. They may not be able to clearly hear surrounding traffic and may not be aware that you are there.

7. When a construction worker is close to the road, you should:

Explanation
In construction zones, do not exceed the posted safe sped limit. Slow down even more when workers are near the roadway.
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