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 Missouri Commercial Driver’s 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. The tire load:

Can be exceeded in cooler conditions.

Is the maximum safe weight a tire can carry at a given pressure.

Must be written in the shipping papers.

Tire load is the maximum weight a tire can safely carry at a given pressure. This rating is stated on the side of each tire.

2. When slowing down, you should ____ to warn other drivers

Use a turn signal

Sound your horn

Tap your brakes

Before slowing down, it can be a good idea to lightly tap your brakes. This will cause your brake lights to flash, providing a warning to motorists behind you.

3. Which gas would cause concern due to a faulty exhaust system?

Oxygen

Carbon monoxide

Nitrogen

A leaking exhaust system can introduce carbon monoxide, which is poisonous, into the cab or sleeper berth.

4. When passing another vehicle, you should:

Make eye contact with the other driver.

Assume the other driver doesn't see you.

Slow down.

Whenever you pass another driver, bicyclist, or pedestrian, you should assume as a precaution that they do not see you.

5. 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.

6. How does doubling your speed from 20 mph to 40 mph affect your vehicle's braking distance?

It stays about the same.

It doubles.

It quadruples.

Increasing your vehicle's speed will increase your vehicle's striking power and braking distance. Doubling your vehicle's speed from 20 to 40 mph will quadruple its braking distance.

7. Your CDL will be revoked if:

You want to add an endorsement.

Your privilege to operate your personal vehicle is revoked.

You have not paid a toll.

If your privilege to operate your personal vehicle is revoked, canceled, or suspended due to moving traffic violations, you will also lose your CDL. This does not apply if your license is revoked due to parking violations.

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