All your missed questions are saved
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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.
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Getting behind the wheel of a big rig on Kansas’ 141,000 miles of roads? You’ll definitely want to add the Air Brakes qualification to your Commercial Driver’s License (CDL). Until you pass both the Kansas DMV Air Brakes Test and the Skills Test in an air brake-equipped vehicle, your CDL will bear the “L” restriction, which will make it illegal for you to drive any vehicle equipped with air brakes. As most CMVs are now equipped with air brakes, this restriction will substantially impact your job prospects.
The DMV Air Brakes Knowledge Test includes 25 multiple-choice questions, and you’ll need to answer at least 16 correctly (80%) to pass. If you don’t pass, you must wait one business day before retesting and may be required to pay a retest fee. To avoid these potential delays and added fees, we encourage you to work with our series of Kansas Air Brakes Practice Tests. They are designed to help ensure you pass your official exam on the first attempt.
Federal Motor Carrier Safety Administration Provider
M.S., Chief Educational Researcher (ACES member)
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Based on the Kansas CDL Manual, our CDL Air Brakes Practice Tests mirror the official exam’s structure and topics. Each practice question offers instant feedback to help lock in what you’ve learned and speed the process. Topics covered include air brake safety, inspection procedures, and air pressure systems. Our practice tests also include an interactive CDL handbook, AI-driven feedback, and our revolutionary Challenge Bank, which remembers your missed responses and addresses that material again later in the learning process. These tools enhance retention and reduce preparation time. Once you’ve aced this particular practice test, try another here: https://driving-tests.org/kansas/ks-cdl-air-brake-practice-test/.
From the open stretches of U.S. 54 to the freight routes through major hubs like Kansas City, your air brake-qualified CDL opens doors within such industries as transportation, construction, and agriculture. Major employers rely on air brake-equipped vehicles and qualified CDL drivers to move livestock, grain, and manufactured goods safely across the state and beyond. Simply put, many doors will be closed to you if your CDL bears the “L” restriction, so don’t delay in taking care of this.
Since most combination vehicles in Kansas use air brakes, you might also consider taking another step and passing the CDL Combination Vehicles Knowledge Test. This test is part of the requirements for a Class A CDL, which is a career super-charger once obtained. Check out one of our practice tests here: https://driving-tests.org/kansas/ks-cdl-combination-test/. You can further boost your career prospects with endorsements for Doubles/Triples (T), Tank Vehicles (N), Hazardous Materials (H), or Combination (X), each available through our Kansas-specific endorsement practice tests: https://driving-tests.org/kansas/ks-cdl-hazmat-practice-test/.
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 KS 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.
Verify at tpr.fmcsa.dot.gov
