CDL TANKER PRACTICE TEST DISTRICT OF COLUMBIA

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The tanker endorsement applies to drivers who wish to drive a tank in Class A, B, or C CDL. To add this endorsement to your CLP/CDL, you must pass a knowledge test on the problems posed by large volume liquid cargos. The District of Columbia CDL tank vehicles test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The DC tanker test covers the following sections of the District of Columbia CDL Manual: Driving Safely, Combination Vehicles, Tank Vehicles, Hazardous Materials. Take this DC tanker practice test now to prepare for the actual test!
1. Forward-and-back surge is strongest in:
empty tanks.
unbaffled tanks.
baffled tanks.
bulkhead tanks.
2. To apply the parking brakes:
push the parking brake control knob in.
pull the parking brake control knob out.
push the brake pedal three times.
place the parking brake control knob in Neutral.
3. Empty trucks:
have more traction than full trucks.
require greater stopping distances than full trucks.
stop quicker when you use only the emergency or parking brake.
None of the above.
4. If you discover a cargo leak, you should call for help and:
continue driving in order to find a truck stop.
use shipping papers to identify the leaking material.
touch the leaking HazMat to identify the material.
try to identify the material by smell.
5. Baffles:
help to control the side-to-side liquid surge.
help to prevent cargo overload.
separate the load.
help to control the forward and backward liquid surge.
6. An Anti-lock Braking System:
keeps your wheels from locking when you brake hard.
increases a vehicle's stopping power.
lets you brake faster.
increases the distamce required to stop on slippery surfaces.
7. After an accident, an improper use of flares could cause:
the vehicle to slide back and forth.
a fire if spilled fuel is on the ground.
the springs to put on the brakes.
air pressure to build from 50 to 100 psi within 2 minutes.
8. If there is a fire and you are not sure what to use to put it out, you should:
use a fire extinguisher.
use water.
wait for firefighters.
use dry powder.
9. A shipping paper for HazMat must include:
page numbers if the shipping paper has more than 1 page.
a proper shipping description for each HazMat.
a shipper's certification signed by the shipper.
All of the above.
10. You or your employer must call the National Response Center when any of the following occur as a direct result of a HazMat incident, EXCEPT:
an injured person requires hospitalization.
black ice makes the road look wet.
spillage occurs.
a person is killed.
 
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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 Tanker Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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