CDL HAZMAT PRACTICE TEST DISTRICT OF COLUMBIA

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Any driver, regardless of the vehicle Class, who wants to haul hazardous materials, must add an “H” endorsement to their CDL. In order to obtain the Hazmat endorsement drivers are required to pass a Transportation Security Administration background check and a knowledge test. The District of Columbia hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The DC CDL hazmat test covers the information found in the District of Columbia CDL Manual. Study the chapter covering hazardous materials to learn how to recognize, handle, and transport Hazmat, then take this practice test to prepare for your exam!
1. If you have convex mirrors, be aware that:
objects may appear to be faster than they really are.
in a convex mirror objects appears larger than they really are.
objects seem closer than they really are.
everything appears smaller in a convex mirror than it would if you were looking at it directly.
2. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
listed at the bottom.
identified by an "H" placed before the shipping description.
entered first.
written in a larger font.
3. When driving at night you should:
always use low beams.
use your high beams when it is safe and legal to do so.
keep the interior light on.
All of the above.
4. A vehicle inspection should be done:
the same way each time so you are less likely to forget something.
by a helper whenever possible.
differently each time, so you are less likely to forget something.
once every month.
5. You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
1/32
3/32
2/32
4/32
6. Which of the following statements about retarders is NOT correct?
Retarders reduce reduce brake wear.
You should turn the retarder off whenever the road is wet, icy, or snow covered.
Retarders help slow a vehicle, reducing the need for using brakes.
Retarders help you avoid skids.
7. When you are out of the vehicle, you must keep shipping papers related to hazardous materials:
on the driver's seat.
in a locked glove compartment.
in a pouch on the driver's door.
None of the above.
8. Identification numbers are a 4 digit code used to identify hazardous materials. The identification number is preceded by the letters "NA" or "UN". The letters "NA" are associated with proper shipping names that are only used:
within the United States and to and from Canada.
within the national borders.
within the United States and North Africa.
internationally.
9. As you approach off ramps and on ramps, remember:
that downgrades make it easier to reduce speed.
that the posted speed limit may not be safe for larger vehicles.
to maintain your highway speed.
to always brake and turn at the same time.
10. If the words "Inhalation Hazard" appears on the shipping paper, the __________ placard must be displayed.
Poison Inhalation Hazard or Poison Gas
Corrosive Materials
Liquid Gas
Reportable Quantity Hazard
 
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Frequently Asked Questions

To obtain a driver's license in the District of Columbia, teens between 16 to 20 are enrolled in the Gradual Rearing of Adult Drivers (GRAD) Program:

  • If you are at least 16 years old, you can obtain a learner permit.
  • If you are 16 ½ and have held a learner permit for at least 6 months without traffic violations, you are ready for the provisional driver license.
  • If you are 17 years old and have held a provisional driver license for at least 6 months, you can obtain a full license with conditions (until you turn 18).

At 21 years old, you are released from the GRAD program, and you may immediately schedule a road test.

To schedule and take the DMV written test in the District of Columbia, you have three options:

  1. Select a DC DMV Service Center and schedule an appointment in person at takemydrivingtest.com/dc. Choose a location, date, and time for your exam.
  2. Select a Test Proctoring Center.
  3. If you are between 16 and 20 years old you can choose to take the exam online at home. Upon completing the virtual knowledge test, you'll promptly receive your test results. If you pass, simply visit any DC DMV Office within 14 business days to obtain your learner permit.

DC DMV requires you to bring specific documents to verify your eligibility for a class D driver's license: 

  • Proof of identity and age.
  • Proof of lawful presence.
  • Proof of Social Security Number.
  • Two proofs of district residency.
  • Parental Consent Form (if you are under 18 years old).
  • Medical/Eye Form (If you have a particular condition or if you're above 70 years).

Refer to the official DC Document Verification Guide for the complete list of acceptable documents.

The DMV written test in the District of Columbia is available in multiple languages, including English, Amharic, Arabic, Cantonese, French, German, Japanese, Korean, Mandarin, Portuguese, Russian, Spanish, Tagalog, Thai, and Vietnamese. Additionally, audio-assisted tests are provided for individuals who require assistance with reading.

To prepare for the DMV written test, you can refer to the official DC Driver's Handbook. The manual covers various information about road rules, traffic signs, and safe driving practices. Study carefully the different sections and test your knowledge with our free practice tests!

Learner permit:
  • Driving only with an instructor aged 21 or older (no passengers allowed).
  • Specific driving hour restrictions (from 6 am to 9 pm).
  • All occupants must wear seat belts.
  • Mobile phones cannot be used while driving.

Provisional license (16 ½ - 20 years old):
  • Driving alone with a maximum of one passenger aged 21 or older in the front seat, or with siblings/child.
  • Specific time restrictions:
- September to June (Sunday to Thursday from 6 am to 10:59 pm; Friday and Saturday from 6 am to 11:59 pm)
- July and August (from 6 am to 11:59 pm).
  • No driving for compensation (if under 18).
  • All occupants must wear seat belts.

Full license with conditions (under 18):
  • Same restrictions as the provisional license if you are a minor, but you are allowed to transport two passengers under 21.

Driving hour restrictions don't apply if you are accompanied by a holder of a valid driver's license aged 21 or older or for job, school, religious, or sport activities.


The DC instruction permit is valid for a period of two years for U.S. citizens and cannot be renewed. After its expiration, you will need to retake and pass the knowledge test again. During this period, practice to enhance your driving skills before the road test.

If you don't pass the DMV written test, you must wait 72 hours for a second try. If you fail six consecutive attempts, you will have to wait twelve months from the date of your initial test before retaking it. Sign up for DMV Premium and practice with extra tests to maximize the chance of passing!

DC CDL Hazmat Test

Number of questions: 30
Correct answers to pass:24
Passing score:80%
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