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. Skids caused by acceleration can usually be resolved by:

Explanation
Skids caused by acceleration can usually be corrected by taking your foot off of the accelerator. If you are on an especially slippery surface, you may also need to push the clutch in.

2. An air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately ____ to come to a complete stop.

Explanation
A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.

3. The parking brake should be:

Explanation
The parking brake in a vehicle with air brakes should be used every time the vehicle is parked.

4. It is illegal to operate a CMV with a minimum blood alcohol content (BAC) of:

Explanation
Operating a CMV with a minimum blood alcohol content (BAC) of 0.04 percent is illegal and will result in loss of license for at least one year for a first offense. If you operate a CMV with any detectable amount of alcohol in your system while remaining below the legal limit of 0.04 percent, you will be put out-of-service for at least 24 hours.

5. A driver should stop after a short distance after changing a tire to:

Explanation
After a tire has been changed, you should stop after a short distance to re-check the tightness of the wheel nuts.

6. The air compressor governor controls:

Explanation
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.

7. What is the maximum fine for driving a CMV without a CDL?

Explanation
You can be fined between $75 and $300 for driving a commercial motor vehicle without the appropriate license.
DMV Writen Test Logo