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View All PlansFailure 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.
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 2025) 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!
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Last verified for accuracy: November 2025 (reviewed weekly)
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