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Based on official Colorado exam questions

CO CDL Double/Triple Trailers Practice Test 3 2025

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

As you continue to build on the skills you learned with the previous practice tests, you will find our third free Colorado DMV Double/Triple Trailer endorsement practice test to be equally insightful. Much like the ski instructors at Beaver Creek Resort, the practice test is expertly designed to help drivers eager to advance their skills. The practice test expedites your learning process by calling your attention to the information you must learn to add a “T” endorsement to your Colorado commercial driver’s license (CDL). This endorsement will allow you to pull multiple trailers. You will find the methods of the practice test to be more supportive and encouraging than any other on-line resource.

Our Colorado DMV Double/Triple Trailer endorsement practice test will strategically enhance your driving skills to help you pass the required official knowledge test. By targeting your specific learning obstacles, the practice test effectively eliminates any misunderstandings of the information you must know to earn your endorsement. The official knowledge test requires you to answer at least 80% of its 20 questions to pass. The instruction provided by the practice test makes this score achievable. You’ll be confident in the training that the practice test provides to put your stress aside and meet the challenges of the official knowledge test.

This Colorado DMV Double/Triple Trailer endorsement practice test is supported by authoritative information to validate the information you must learn. The practice test is based on the most recent Colorado DMV CDL manual (Colorado CDL Handbook 2025) and is up to date as of November 2025. It contains 20 multiple-choice questions, resembling those on the official knowledge test, to identify the information you must better understand. Unlike using a study guide that trains you to memorize the answers to a series of questions, you won’t find yourself at risk of being stuck in your progress or lost in confusion. The practice test interacts with your responses and provides a detailed explanation of how to correct any incorrect answers. You can completely trust the information offered because it is taken directly from the Colorado CDL manual and can be appropriately applied to various driving scenarios. Additionally, you will find this information easily understandable, making it possible to pass the official knowledge test on your first attempt.

The Food and Wine Classic features the best of culinary delights and fine wines, and you can find top-notch instruction to begin your driving career at https://driving-tests.org/colorado/co-cdl-practice-test/.

5 min to complete
Available in EN and ES
CO commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives

Authored and curated by Steven Litvintchouk, M.S.

Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
Last verified for accuracy: November 2025 (reviewed weekly)

What to expect on the actual CO permit test

20

questions

16

correct answers to pass

80%

passing score

We know what it takes to pass. And we’ve got the proof.

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