Instructions

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 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 Oklahoma 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 50

Passing Score 40

1. A Class 1 hazardous material is:

An explosive.

Solid.

Corrosive.

Explosives are placed in hazardous materials Class 1.

2. Blocking is used to:

Keep cargo in a large box.

Prevent cargo from sliding in a trailer.

Prevent cargo from falling out of a trailer.

Blocking may be used on all sides of a piece of cargo to keep it from sliding while the vehicle is in motion.

3. Alcohol is removed from the body:

By exercising.

At a fixed rate.

More quickly if the person stays awake.

The liver removes alcohol from the body at a fixed rate. Despite popular belief, tricks like drinking coffee or taking a cold shower will not speed up the process. The only way to become sober is to allow your body the time it needs to remove the alcohol from your system.

4. Blocking is used to:

Prevent cargo from shifting.

Prevent cargo from being loaded too high.

Prevent cargo from being unloaded too quickly.

Blocking is used in the front, in the back, and/or on the sides of a piece of cargo to keep it from sliding while the vehicle is in motion.

5. Rough acceleration:

Is a good way to stay awake on long trips.

Is distracting.

Can cause mechanical damage.

Rough acceleration can cause mechanical damage, so be sure to accelerate smoothly and gradually.

6. A thin layer of ice that forms on road surfaces is called:

White ice.

Black ice.

Blue ice.

Black ice is a thin layer of ice that is clear enough for the road surface to be seen through it. A road covered in black ice may look like it is merely wet. You should be very careful when temperatures are below freezing and the road looks wet.