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If you are considering a career in commercial driving, now is the best time to take the first step and get a Commercial Driver’s License (CDL). You’ll need this license to operate commercial vehicles in Illinois. The Illinois Secretary of State (DMV) oversees the licensing process and requires all applicants to pass several exams.
The official general knowledge test is the first theory exam you must pass. It is based on the official Illinois Commercial Driver License Study Guide (Illinois CDL Handbook 2025). To familiarize yourself with the basic aspects of commercial driving theory, we recommend reading this manual multiple times during your learning phase.
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This Illinois CDL Combination Vehicles Practice Test closely reflects the content and format of the official combination vehicles knowledge test, which is required for operating such vehicles. It is designed to boost your learning potential and help you master this subject within a few weeks. All 30 questions have multiple answer choices, but only one is correct. Please read every question twice and think before you select an answer.
As a beginner, you should not let mistakes discourage you. It is perfectly normal to fail your first few training sessions. We give you the opportunity to learn from your mistakes with the help of several features implemented in this practice test. A detailed explanation is provided for each question. Note this feedback in a notebook or notebook app and revisit the material during future training sessions.
“Officer Frank” is an automated assistant specialized in commercial driving theory. He is your personal coach and will assist you during your training sessions. At your request, “Officer Frank” can provide real-life examples and helpful insights. Stuck on a difficult question? Request a hint that nudges you in the right direction without revealing the correct answer.
Whether it takes weeks or months, it is crucial to avoid rushing your learning phase. Your knowledge can only be improved gradually. While this practice test will teach you what it takes to drive combination vehicles, our Free Illinois CDL Permit Practice Test can help you master commercial driving theory and ace the official general knowledge exam on your first attempt.
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 IL 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.
