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. Test questions come from the Ohio Commercial Driver’s 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. As part of the vehicle inspection test, a CDL applicant may be asked to:

Check the engine oil level.

Replace a tire.

Remove the alternator belt.

When checking the engine compartment during the vehicle inspection test, you will need to check the engine oil level.

2. A safety valve is set to open at ____ pounds per square inch (psi).

100

150

200

The safety valve protects air tanks and the rest of an air brake system from accumulating too much air pressure. The safety valve is usually set to open at 150 psi.

3. After starting the engine, the Anti-Lock Braking System (ABS) light stays on if:

The ABS is working properly.

The ABS is not working properly.

The ABS is not engaged.

The Anti-Lock Braking System (ABS) indicator light should come on after an engine is started. The light will then turn off. If the light remains on, the ABS it not working properly.

4. What is reaction distance?

The distance you will travel between realizing you must brake and when you physically hit the brakes

The distance you will travel between a hazard becoming visible and you seeing the hazard

The distance you will travel between seeing a hazard and realizing you must brake

Your vehicle's stopping distance can be calculated by adding together your perception distance, your reaction distance, and your vehicle's braking distance. Reaction distance is the distance traveled between the moment you mentally perceive a hazard and the moment you physically hit the brakes.

5. How can a driver maintain alertness while driving?

Stay fit and healthy

Keep the cab warm

Eat heavy foods

Eating heavy foods before driving or keeping the temperature in a cab too high can cause a driver to become drowsy while behind the wheel. Exercising and maintaining a healthy diet will help a driver to stay alert while driving.

6. Which of the following vehicles is not exempted in requiring the driver to hold a CDL?

A military vehicle

A school bus

An emergency vehicle

Subject to certain conditions, a CDL is not required to operate military vehicles, authorized emergency vehicles, farm equipment, or recreational vehicles. It is also not required for operating a straight truck that contains only your personal property that you are not selling.

7. What is road rage?

Operating a motor vehicle with the intent of doing harm to others

Operating a motor vehicle that is deemed unsafe

Operating a motor vehicle that has not been inspected

Aggressive driving is defined as operating a motor vehicle in a selfish, bold, or pushy manner. Road rage is defined as operating a motor vehicle with the intent of doing harm to others, or the intent of physically assaulting another driver or their vehicle.

Grade This Section