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 | => | 7% |
| 80-89 | => | 35% |
| 70-79 | => | 11% |
| 60-69 | => | 25% |
| <60% | => | 23% |
In Oklahoma, the weather can change quickly without warning. The open plains make strong crosswinds a common problem for combination vehicles. When the trailer is light or empty, there isn’t much weight to provide adequate traction. In this situation, drivers must reduce their speed, keep both hands firmly on the steering wheel, and avoid sudden steering changes.
As an aspiring commercial driver, you must know how to handle such challenges. The official Commercial Driver’s License Manual (Oklahoma CDL Handbook 2026) will teach you about safe driving practices, pre-trip inspections, and operating commercial vehicles safely.
This manual includes a section dedicated entirely to combination vehicles (Section 6), which is what the official combination vehicles knowledge exam is based on. We recommend reading this section multiple times, and when you’re ready, you can use our Free Oklahoma CDL Combination Practice Tests to evaluate your knowledge. This intuitive tool has been designed to boost your learning potential. Use it consistently throughout your learning phase to build a strong foundation for your driving skills.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Many of our practice tests are untimed, including this one. Answer all 25 questions at your own pace and take as long as you need to finish each training session. If you require assistance, you can initiate a conversation with your personal AI coach. Nicknamed “Officer Frank,” this automated assistant can provide hints, real-life examples, and detailed explanations that will help you understand the reasoning behind each correct answer.
All you need to train with this practice test is a compatible device and a stable internet connection. As long as you’re not in private browsing mode, your progress will get automatically saved. If you must interrupt an active practice session, you can resume it later from the last question you answered.
We also offer a Free Oklahoma CDL Permit Practice Test. It will help you master commercial driving theory and achieve a passing score on the official general knowledge exam. Start your training today and dedicate the following weeks to your learning phase. Improve your knowledge with one question at a time and get one step closer to earning your Class A CDL.
Driver’s Ed is - nobody wants to set foot inside the DPS. 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 OK 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 DPS.
