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Based on official District of Columbia exam questions

DC CDL Double/Triple Trailers Practice Test 3 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements

Although you may have already learned a great deal from our previous practice tests, you can further expand your knowledge of pulling multiple trailers with our third free District of Columbia DMV Double/Triple Trailer endorsement practice test. Adding a “T” endorsement to your District of Columbia commercial driver’s license (CDL) permits you to tow multiple trailers, which can qualify you for more driving opportunities. However, much like getting to the tip of the Washington Monument, you’ll need the proper credentials to access them. The practice test gives you a strategic advantage in learning information critical to your success. Using the practice test, you can overcome your specific learning obstacles and be positioned to make great strides in advancing your driving career.

Various other on-line resources may claim to be capable of preparing you, but our District of Columbia DMV CDL Double/Triple Trailer endorsement practice test more effectively addresses your most immediate areas for improvement. Before you can obtain a “T” endorsement, you must pass an official knowledge test. You will be required to correctly answer at least 80% of the 20 questions on the official knowledge test to earn a passing score. The practice test contains 20 questions to pinpoint the issues you find most confusing, teach you the information to understand them, and increase your chances of passing the official knowledge test on your first attempt.

Developed with the most authoritative information available, this District of Columbia DMV CDL Double/Triple Trailer endorsement practice test goes beyond teaching you surface knowledge. Unlike other resources, such as study guides, the practice test does not merely teach you to memorize the answers to a series of questions but provides the necessary information to expand your knowledge base. If you submit an incorrect answer, the practice test provides a detailed explanation of the correct one. You can completely trust the information provided because it is based on the most recent District of Columbia DMV CDL manual (District of Columbia CDL Handbook) and is up to date as of October 2025.

The Heights of the Building Act may prohibit the construction of tall structures, but you’ll have an unlimited ceiling for success in your driving career with the practice tests at https://driving-tests.org/district-columbia/dc-cdl-practice-test/.

Pass the first time with Premium
97% of our Premium users pass first try
5 min to complete
Available in EN and ES
DC commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives

Verified for accuracy: October 2025

Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy

What to expect on the actual DC exam

20

questions

16

correct answers to pass

80%

passing score

Are you in another state?

5/5
1 votes
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