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View All Plans| 90-100 | => | 55% |
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| 70-79 | => | 9% |
| 60-69 | => | 7% |
| <60% | => | 0% |
The trucking industry plays a critical role in Colorado’s economy, supporting several key sectors such as energy, agriculture, manufacturing, and retail. Connecting the Midwest to the West Coast, the Centennial State is a vital hub for transporting goods. Its diverse landscape ranges from flat plains to tall mountains, presenting both challenges and opportunities for truckers. During the winter months, the weather can bring a lot of snow on high-altitude highways. Advanced road-clearing technology, such as high-efficiency snowplows and de-icing systems, ensure that commercial drivers have safe passage even during winter storms.
As a commercial driver, you must fully master the controls of your vehicle. Whether you transport passengers or cargo, it is crucial to prioritize safety. If you want to operate a vehicle that carries liquid or gaseous materials in tanks whose individual rated capacity is over 119 gallons and whose aggregate rated capacity is 1,000 gallons or more, you must obtain a Tanker (N) endorsement on your Commercial Driver’s License (CDL). As you prepare for a commercial driving career, we’ll help you pass the Colorado CDL Tanker endorsement knowledge test. Covering safe handling of liquid cargo, special considerations for sloshing and surge, and emergency procedures, this test ensures that the N endorsement is granted exclusively to aspiring commercial drivers who don’t rush through the learning phase.
Federal Motor Carrier Safety Administration Provider
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
The knowledge test is based on the official 2026 CDL manual (Colorado CDL Handbook 2026). This manual contains essential information for anyone who wants to drive a tanker in Colorado, but most students find its content too complex and difficult to study. To increase your chances of success, we recommend adopting a smarter approach.
Our DMV CDL Tanker Endorsement practice tests, specific to the state of Colorado, are designed to help you pass the official knowledge exam on your first attempt. Current for January 2026, these practice tests closely resemble the official written exam, allowing you to familiarize yourself with its content and format in advance.
Since our practice tests can also be used as an educational tool, we have omitted any timer. You can take as much time as you need before submitting an answer and proceeding to the next question. Each question has multiple answer options, but only one of them is correct, so you shouldn’t be overthinking your decision. Even if you make a mistake, our helpful automated assistant will provide a detailed explanation of the correct answer, allowing you to understand why your choice was incorrect.
Driver’s Ed is - nobody wants to set foot inside the DMV. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2026 CO Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DMV.
Driving-Tests.org is officially listed in the FMCSA Training Provider Registry (TPR) as an approved ELDT training provider.
You can verify our listing yourself at tpr.fmcsa.dot.gov - search for "Driving-Tests" in the Provider Name field, then click the "Online" tab.
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