Class B CDL Knowledge Review - ONLINE CDL SCHOOL

Practice free. No account needed.
Want your scores, test history, and progress in your driver dashboard? Create a free account or log in before starting to save your results.

Class B CDL Knowledge Review

Build confidence with 10 original questions about Class B CDL Knowledge Review. Review your answers and explanations after finishing.

Supplemental study practice. This is not a government licensing exam or ELDT certification, and does not replace hands-on training. Follow your state’s current handbook.

1 / 10

A driver is applying for a Class B CDL for the first time. What must they complete before taking the skills test?

No requirements before the skills test

Only a vision screening

Only the skills test

Entry Level Driver Training and knowledge tests

2 / 10

You are driving a CMV and have been on duty for 13 hours after 10 consecutive hours off. According to federal property-carrying driver rules, how much longer can you drive before reaching the 14-hour limit?

3 hours

1 hour

4 hours

2 hours

3 / 10

A driver operates a CMV from one state to another. What type of commerce is this considered?

Intrastate commerce

Private commerce

Local commerce

Interstate commerce

4 / 10

A driver is convicted of reckless driving in their personal vehicle, resulting in license suspension. What happens to their CDL?

No effect on their CDL

They receive a warning letter

They must retake the CDL test

They lose their CDL driving privilege

5 / 10

A driver with a hazardous materials endorsement is convicted of a disqualifying crime. What must they do within 24 hours?

Report to their employer only

Apply for a new CDL

Retake the knowledge test

Notify and surrender their hazardous materials endorsement to the state

6 / 10

A commercial driver is stopped for a roadside inspection. What document must they carry if they have a medical variance?

A copy of their birth certificate

A letter from their employer

A fuel tax receipt

Medical variance documentation

7 / 10

You are applying for a CDL and live with someone else, with no bills in your name. What is one way to provide proof of residency?

Submit a letter from your employer

Show your Social Security card

Provide only your birth certificate

Bring the person you live with and their ID, plus official mail with your name and address

8 / 10

You are driving a single truck with a manufacturer’s gross vehicle weight rating (GVWR) of 27,000 pounds. What class of CDL do you need to operate this vehicle?

Class A

Class C

No CDL required

Class B

9 / 10

You are applying for a hazardous materials endorsement for the first time. What additional requirement must you meet besides passing the knowledge test?

Submit fingerprints and complete a federal background check

Take a road test

Provide a medical variance

Show proof of insurance

10 / 10

You are stopped at a railroad crossing in a commercial vehicle. What is one violation that could result in losing your CDL for at least 60 days?

Using your hazard lights

Honking your horn unnecessarily

Stopping before the crossing when not required

Failing to have enough space to drive completely through the crossing

Your score is

The average score is 0%

About the Class B CDL Knowledge Review practice quiz

This practice quiz focuses on Class B CDL Knowledge Review, listed under CDL Practice — CDL Licensing and ELDT. Use it to check what you understand, spot topics to revisit, and connect the material to safe, informed decisions on the road.

Before you begin

Keep your current CDL manual or course notes nearby. Read each prompt carefully and think through why an answer fits, especially when a question describes a vehicle, road, or workplace situation. Licensing rules and procedures can vary, so confirm requirements with current official materials for your state.

After you finish

Review any explanations shown with your results. Note unfamiliar terms or missed concepts, then revisit your manual or course notes before trying again. Use your score to guide study; understanding why an answer is correct matters more than the number alone.

Study note: These quizzes are independent study practice. They are not state licensing exams, official government materials, or ELDT certification, and they do not replace required training.

Explore CDL Tests to find more practice by subject.