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Failure to pass the Louisiana OMV CDL Air Brakes Knowledge Test means that your CDL will include the restriction “L.” By preventing you from operating commercial motor vehicles (CMVs) with air brakes, this restriction will negatively affect your job prospects. A one-day waiting period and fee are implemented should you decide to retake the test after failing it. Our Louisiana OMV CDL Air Brakes Practice Tests provide the tools to pass on the first attempt.
From the state’s flat coastal plains, the wetlands, and the Mississippi River Delta to the flood-prone areas affected by annual rainstorms, hurricanes, and icy winters, the reliability provided by air brakes is sought after for heavy freight transports. Key transportation routes that require air brake-qualified drivers include I-10 (connecting Louisiana to Texas and Florida), I-20 (an east-west route linking Louisiana to Georgia), I-49 (running north-south between Shreveport and Lafayette), and US-61 (linking Louisiana to Mississippi and other states). Since most semi-trucks, tractor-trailers, and commercial buses rely on air brakes for safe navigation, removing the air brake restriction from your CDL is crucial for expanded job opportunities.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
The Pelican State relies on drivers with the air brake qualification in key industries, including oil and gas, agriculture, petrochemicals, and tourism. Companies requiring air brake-qualified drivers include ExxonMobil and Chevron in the oil and gas industry and Pilgrim’s Pride and JBS USA in the agriculture sector. FedEx Freight, XPO Logistics, and Schneider National are major companies in the logistics and freight sector that require air brake-qualified drivers, as do Dow Chemical and Honeywell in the manufacturing sector. Greyhound Lines and Lafayette Bus Lines are major companies in the charter bus industry. Finally, hundreds of drivers are employed by Louisiana’s school districts to drive their air brake-equipped full-size school buses. The “L” restriction makes these opportunities unattainable.
The multiple-choice Air Brakes knowledge test is based on the official state CDL manual (Louisiana CDL Handbook 2026) and requires a minimum passing score of 80%. Our CDL Air Brakes Practice Tests thoroughly prepare you for the official OMV Air Brakes Knowledge Test. Additionally, the information you learn will help prepare you for your skills test.
You’ll receive instant feedback on all your Practice Test responses, and our tests mimic the official knowledge test. This method speeds learning and ensures you pass the knowledge test!
Driver’s Ed is - nobody wants to set foot inside the OMV. 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 LA 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 OMV.
