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 PlansWelcome to our Free North Dakota CDL Combination Practice Test, one of several we offer! Updated for December 2025, this practice test closely reflects the content and format of the official general knowledge exam. It consists of 25 multiple-choice questions based on the official North Dakota Commercial Driver License Manual (North Dakota CDL Handbook 2025), specifically Section 6 (Combination Vehicles). A minimum score of 80% is required to pass.
You get unlimited attempts and nonstop access to our practice tests. Repetition and consistency are key during your learning phase, which is why we recommend training with this tool as often as possible. Do not get discouraged if you fail. It is perfectly normal to make mistakes, especially if you are unfamiliar with this subject. We give you the opportunity to learn from your mistakes as soon as they occur, so you won’t have to wait until the test ends to know what went wrong. A detailed explanation will be provided for each question, helping you understand the reasoning behind the correct answer. Please pay attention to this feedback and note it in a notebook or notebook app for future reference.
An automated assistant will be present during your training sessions. Nicknamed “Officer Frank,” this AI coach can provide helpful insights at your request. If you get stuck on a difficult question, you can ask for hints, and “Officer Frank” will give you indications that nudge you in the right direction without revealing the correct answer. Do not hesitate to request assistance from your personal AI coach whenever you need it.
You can also check out our Free North Dakota CDL Permit Practice Test, which will help you ace the official general knowledge exam on your first attempt. It features 50 multiple-choice questions on commercial driving theory, similar to the ones you will encounter at the DOT location on exam day.
Start your training today and keep track of your scores. Once you consistently achieve scores above 90%, you can take the official combination vehicles knowledge test with confidence that you will pass on your first attempt.
Chief Educational Researcher, Driving‑Tests.org (ACES member)
Verified for accuracy December 2025
Methodology & Editorial Policy
questions
correct answers to pass
passing score
Driver’s Ed is - nobody wants to set foot inside the DOT. 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.
