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 possible answer choices. Test questions come from the Maine 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. If your license to operate a personal vehicle is revoked or suspended:

Explanation
If your license to operate your personal vehicle is revoked, canceled, or suspended, you may not obtain a hardship license to operate a CMV.

2. When completing a conventional parallel parking maneuver, you should:

Explanation
You may be asked to complete a conventional parallel parking maneuver into a parking space that is to the right of your vehicle. You should drive past the parking space before backing into it while bringing the rear of your vehicle as close to the rear of the space as possible. Your vehicle should be completely within the boundaries of the space.

3. An empty truck:

Explanation
Empty trucks require longer stopping distances than full trucks because they have less traction available.

4. Hanging meat as cargo is usually:

Explanation
A cargo of hanging meat can be very unstable, both because the meat swings about in transit and because its center of gravity is high.

5. When approaching a railroad crossing, you should:

Explanation
You should not rely solely upon the presence of warning signals, gates, or flaggers to alert you to the approach of a train. Be especially alert to approaching trains at crossings that are not controlled by gates or signals. At any railroad crossing, you should operate under the assumption that a train is coming.

6. If the safety relief valve in the air brake system releases air:

Explanation
An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.

7. If feeling drowsy while driving, you should:

Explanation
If you begin to feel drowsy while driving, the best thing to do is to stop and get some sleep. A driver trying to push on and finish a trip while fatigued is a major cause of fatal accidents.
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