District of Columbia
CDL Practice Test

0

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

Where are the two main places where the hazardous material identification number appears?

2 / 40

When checking for_____you are looking for dripping fluids or puddles on the ground below the transmission or engine.

3 / 40

You should check that the following makes an audible noise:

4 / 40

The _____of the kingpin has the locking jaw close around it.

5 / 40

Remember to____when connecting the converter dolly to the rear trailer.

6 / 40

When inspecting the_____you pump the pedals 3 times and then hold it down for 5 seconds feeling for no movement to occur.

7 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

8 / 40

The gauge that indicates normal or increasing lubrication pressure to prevent engine seizure, failure or breakdown is:

9 / 40

All standing riders must stay:

10 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

11 / 40

A portable tank differs from a cargo tank in that ______.

12 / 40

What is the purpose of the supply pressure gauge?

13 / 40

Which hazard classes must you NEVER smoke, or perform any activity involving fire, within 25 feet of?

14 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

15 / 40

What keeps air in the tanks should the air compressor develop a leak?

16 / 40

What school bus accidents should be reported?

17 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

18 / 40

What might happen if a trailer is too high when you try to couple?

19 / 40

When accelerating:

20 / 40

If you double your speed, what will happen to your stopping distance?

21 / 40

The transport index of a radioactive material:

22 / 40

Buses may carry small-arms ammunition labeled ORM-D, emergency hospital supplies, and drugs. However, buses must never carry:

23 / 40

What is the best way to prevent brakes form overheating while drive down a steep grade?

24 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

25 / 40

The purpose for the emergency air line is:

26 / 40

What does the amount of liquid you can carry depend on?

27 / 40

The best way to test if the spring brakes come on automatically is to:

28 / 40

Select the first action to do when the low air pressure warning comes on:

29 / 40

Which of the following is something the driver must watch for:

30 / 40

How do you test your service brakes?

31 / 40

If there is not a sight glass to check the oil level you are required to look for leaks around the _____.

32 / 40

The minimum tire tread depth for front tires is:

33 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

34 / 40

On tandem axle for trailers, the sliding mechanism and locking device is:

35 / 40

Who is responsible for certifying on the bills of lading that the hazardous materials are prepared properly?

36 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

37 / 40

What can side to side surge cause?

38 / 40

Overhead inside mirror is used to:

39 / 40

Select the two reasons as to why special care is needed when driving a tank vehicle:

40 / 40

Before transporting a sealed load, you must check:

Your score is

The average score is 0%

5/5 - (1 vote)

District of Columbia Drivers Test

District of Columbia Motorcycle Test

District of Columbia CDL Test

CDL Category Practice Tests

CDL Practice Test

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.