District of Columbia
CDL Practice Test

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Simply because the District of Columbia is the only place in the country that has legal taxation without representation doesn't mean there are no laws at all! Every commercial driver in Washington DC must have a valid commercial driver's license. Typically those licenses will be issued in other jurisdictions but Washington DC can and does issue its own. This online exam will help you practice for the District of Columbia CDL Test. 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.  Good luck!

1 / 40

While driving on a clear night with low beam headlights, you should be able to stop within:

2 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

3 / 40

What are shippers trying to accomplish when they package the material?

4 / 40

Select how brakes work on long, steep downgrades:

5 / 40

If you are required to stop at railroad crossings, you must:

6 / 40

What are some things you should check on the front of your vehicle when doing the walk-around inspection?

7 / 40

On a drawbridge, you do not need to stop, but must slow down and make sure it's safe, when:

8 / 40

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

9 / 40

How should the trailer be lined up when preparing to back the tractor up?

10 / 40

What placards, if any, do you need if your load includes 20 pounds of Division 2.3 gas and 1,001 pounds of flammable gas?

11 / 40

While driving at night, which lights should you use as often as you can?

12 / 40

Commerical vehicles typically have this type of brake.

13 / 40

Be careful to check the_____when unloading the smaller tanks of bulk heads.

14 / 40

The most dangerous time during the school bus ride is:

15 / 40

Select the true statement:

16 / 40

Select the factors that can cause your brakes to fade or fail:

17 / 40

What is the safest way to stop unruly behavior on the bus?

18 / 40

Cargo tanks are:

19 / 40

Select the definition of "off-tracking."

20 / 40

Select the answer that is controlled by the foot brake.

21 / 40

Signs of distracted drivers include:

22 / 40

What product is typically carried in a liquid tank trailer without baffles?

23 / 40

Double and triple trailers should be driven with care to avoid a rollover or jacknife.

24 / 40

How high should you crank the landing gear?

25 / 40

If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?

26 / 40

What is a technical name?

27 / 40

What school bus accidents should be reported?

28 / 40

Start by___when coupling.

29 / 40

The most stable tanker shape is:

30 / 40

This object should be free of shiny treads, rust, free of cracks and distortions.

31 / 40

Select the true statement about speed and stopping distance.

32 / 40

Which of the following must drivers have in their possession while transporting class A or B explosives?

33 / 40

Select the two things that are important in preventing a rollover:

34 / 40

This object should not be damaged, bent, or rusted through and be evenly centered with the tires and dual wheels evenly separated.

35 / 40

A slack adjuster is:

36 / 40

To test the security of the tractor semi trailer connection you should:

37 / 40

With most hazardous materials, you may park within 5 feet of the road briefly, if your work requires it. The materials that are the exception and do not allow parking this close to the road are:

38 / 40

How do you supply air to the trailer tanks?

39 / 40

What is NOT one of the four skill areas that operating a commercial vehicle requires?

40 / 40

If the hazardous materials are classified as FORBIDDEN you should:

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How To Get A District of Columbia Commercial Drivers License

In the District of Columbia, there are classifications of motor vehicles that may only be driven by those with a current commercial drivers license. Additionally, there are four classes of endorsements, including school bus, passenger and tanker. Any vehicle with a gross weight rating over 26,000 pounds is considered commercial in the District of Columbia.

Additional endorsements also include:

  • Hazardous Materials
  • Double/Triple Trailer
  • Tanker
  • Passenger
  • School Bus

Requirements to Obtain a District of Columbia CDL:

  • Have a valid non-commercial driver license
  • Meet identity, residency, and good driving history eligibility qualifications
  • Take the applicable CDL knowledge tests
  • Get a CDL learner permit
  • Pass the CDL road skills test

A Commercial Driver in Washington DC is held to a higher standard than drivers of typical passenger or other non-commerical vehicles.  CDL holders must pass both written tests as well as a practical / skills test.  You may practice for the written test using our online CDL test tool above.  Upon successful completion, of the official Washington DC CDL skills test, you will be a fully licensed driver and ready to take to the open road!

Hit the Open Road

District of Columbia CDL License Test Tips

You think you're ready?  Hold on there, Turbo!  Check out these CDL Test Tips before you go zipping to the DMV for your exam!

  1. You must have your CDL learner permit for at least 30 days prior to scheduling your road skills test.
  2. Make an appointment on the DC Online Road Test Appointment Scheduler.  Make sure to have your driver license number handy...you'll need it.
  3. On your test day, arrive 15 minutes early.  You will need to bring a CDL licensed driver aged 21 or older and this person must hold the CDL class and endorsements you are testing for.

You'll need to bring a few other things with you as well.

  • valid CDL learner permit
  • valid NCDL
  • DOT medical certification card
  • an appropriate vehicle in which to complete your CDL test
  • current registration and insurance for the vehicle

If you fail the CDL test you must wait three calendar days before attempting it again.  If you fail a second time, you cannot re-test for ninety days!

Additional Information

Information on the Washington DC Department of Motor Vehicles

The District of Columbia CDL certifying agency is responsible for testing and certifying all commercial drivers. To get more information contact them via:

Website:  https://dmv.dc.gov/service/obtain-commercial-driver-license
Phone:  202.673.6813
Email:  [email protected]

 

Additional Washington DC CDL Helpful Links

Please use the links below to learn more about helpful topics related to the District of Columbia CDL testing program or other CDL-related topics.