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 Plans| 90-100 | => | 0% |
| 80-89 | => | 20% |
| 70-79 | => | 5% |
| 60-69 | => | 25% |
| <60% | => | 50% |
Delaware may be America’s second-smallest state, but it’s a vital regional trucking corridor. It is positioned at the crossroads of Interstate 95 connecting New York to Washington, D.C. This state handles an incredible volume of freight across its border, with the Delaware Memorial Bridge alone seeing over 100,000 vehicles daily. If you’ve been driving single-unit trucks, you already know what it takes to operate commercial vehicles. But combination vehicles require more specialized knowledge, and that’s why you must pass several exams before you’re qualified to drive them.
There’s no room for error when you’re behind the wheel of a heavy 18-wheeler. You must understand what makes combination vehicles different from other commercial vehicles. Topics like cargo distribution, pre-trip inspections specific to combination vehicles, coupling and uncoupling procedures, and emergency situations are thoroughly described in the official State of Delaware Commercial Driver License Manual (Delaware CDL Handbook 2025); specifically, Section 6 (Combination Vehicles). Please read this handbook multiple times until you have familiarized yourself with its contents. When you’re ready, you can use our practice tests to evaluate your knowledge.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Our Free Delaware CDL Combination Practice Test is current for December 2025. It consists of 25 questions, which you can answer at your own pace. All questions have multiple answer choices, but only one is correct. This intuitive tool closely reflects the content and format of the official combination vehicles knowledge exam, which you must pass with a minimum score of 80%. It helps you know exactly what to expect on exam day so you can approach it with confidence.
Every question includes a detailed explanation that helps you understand the reasoning behind the correct answer. If you make a mistake, you can use this feedback to understand why your choice was wrong. We recommend noting it in a notebook or notebook app so that you can revisit the material during future practice sessions.
Start your training today and study consistently. All of our practice tests are available online, 24/7. You can train as often as your schedule allows, anytime, anywhere in the world. If you are at the start of a career in commercial driving, you can also check out our Free Delaware CDL Permit Practice Test. After a few weeks of practice, your knowledge and confidence will naturally improve.
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 2025 DE 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.
