All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All PlansAlthough 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 November 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/.
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Methodology & Editorial Policy
Last verified for accuracy: November 2025 (reviewed weekly)
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