CDL Practice Test


Use this site as a guide to help you prepare for the CDL test in Virginia. Questions on our CDL knowledge exams come from sections of the Virginia DMV CDL manual. You can take these practice test questions as many times as you like, as the site is free to use. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin. 

1 / 40

What does the amount of liquid allowed in the tank depend on?

2 / 40

A shipper’s certification is best described as _____.

3 / 40

The Emergency Response Guide, ERG, can best be explained as _____.

4 / 40

Some city transit buses may have a brake-door interlock system, this system:

5 / 40

Select the true statement about speed and stopping distance.

6 / 40

Is this statement true or false: You do not need to use the parking brake if are leaving your vehicle for a short amount of time.

7 / 40

Where can you find a shipper’s certification?

8 / 40

What should you hear when you test the trailer brakes by opening the service air line at rear of trailer with the hand valve on?

9 / 40

You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin.

10 / 40

Which of the following statements is FALSE:

11 / 40

What do you check when doing a visual inspection of the coupling?

12 / 40

An air system that is fully charged will typically have ___ psi of pressure.

13 / 40

What is the brake system that applies and releases the brakes when the brake pedal is used?

14 / 40

At around____the governor allows the air compressor to start pumping again:

15 / 40

Bus drivers must have a CDL if they drive a vehicle:

16 / 40

What should the driver pay special attention to when driving smaller tanks?

17 / 40

Do converter dollies have spring brakes?

18 / 40

Air pressure loss in a vehicle with a fully charged air system should be less than_______after the initial drop and brake applied.

19 / 40

The bolst, brackets, or bushings that attach the air bag and/or spring to the vehicle and axle frame are _____.

20 / 40

Which of these statements about signaling is correct?

21 / 40

Where is compressed air stored?

22 / 40

The best way to describe a dual air brake system is:

23 / 40

What are some of the important parts in the steering system?

24 / 40

Select the true statement about dual air brake systems.

25 / 40

A shipment described on the Hazardous Waste Manifest may only be delivered to another _______ carrier or treatment facility, who then signs the ______, giving you a copy which you must keep.

26 / 40

How do you check the coolant level?

27 / 40

The amount of liquid you can carry depends on:

28 / 40

You should activate hazard lights within approximately how many feet before railroad crossing?

29 / 40

When transporting explosives you may not park:

30 / 40

If you have riders on board, you must never refuel:

31 / 40

The trailer height is correct for connecting a converter dolly to a second trailer when:

32 / 40

What are spring brakes?

33 / 40

What kind of surge occurs with baffles?

34 / 40

Urban mass transit coaches may have a brake and accelerator interlock system. Which of the following statements is true?

35 / 40

Off-tracking happens when going around a corner and:

36 / 40

The most important hand signal you should agree on with a helper is:

37 / 40

The minimum tread depth for steering axle tires is:

38 / 40

You are driving a 60 foot truck at 55 MPH, how much space (in seconds) should you keep in front of you?

39 / 40

Select the true statement about empty trucks:

40 / 40

You are checking the_______when looking at the dipstick to see if the lubrication is at the safe operating range or above the refill line.

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CDL Category Practice Tests

CDL Practice Test

How To Get A virginia Commercial Drivers License

To be eligible for a CDL in Virginia, applicants must meet the following age eligibility requirements.

  • Be at least 18 years old to operate a commercial vehicle intrastate (within Virginia only).
  • Be at least 21 years old to operate a commercial vehicle interstate (outside of Virginia).

Virginia CDL applicants must be certified that they are medically fit to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

  • (Form 649-F) Medical Examiner Report
  • (Form DL-8) Commercial Driver’s License Self-Certification (This form must be completed by a FMCSA-approved medical examiner.

Interstate non-excepted (drivers who do not work for the state or federal governments) must meet federal DOT requirements. Intrastate non-excepted drivers must meet the state requirements.

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Virginia. Applicants can be disqualified for having multiple licenses.

Virginia CDL Endorsements

  • H – Hazmat Vehicles
  • N – Tank Vehicles
  • P – Passenger Vehicles
  • S – School Bus
  • T – Double or Triple Trailer
  • X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

virginia CDL License Test Tips

All Virginia CDL applicants must pass the general knowledge test prior to taking the skills test. To pass the Virginia test, applicants must score 80 percent or higher. Applicants who require endorsements must pass additional tests and pay the required fees. The Virginia skills test can be taken 14 days after applicants pass the knowledge test if applicants have never applied for a CDL before and they pass a state-approved driver education program. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

  • Be an active member of the military.
  • Possess a valid Virginia driver’s license.
  • Have operate a commercial vehicle as part of their military duties.
  • Have been recently discharged from the military.

Additional Information

Information on the Virginia Department of Motor Vehicles

The Virginia Department of Motor Vehicles administers CDL license testing and regulations in Virginia. To get more information contact them via:


Phone: 804.497.7100


Additional Virginia CDL Helpful Links

Please use the links below to access Virginia CDL testing resources and to learn more about practice driving tests for the state of Virginia.