MN CDL Air Brakes Practice Test 4 2025

The dreaded “L” restriction. That tiny letter code on your CDL keeps you from legally driving commercial motor vehicles (CMVs) equipped with air brakes. If you’re looking to remove that restriction and immediately expand your driving career options, you’ve come to the right place. In order to drive air brake-equipped vehicles, you’ll need to pass both the Minnesota DVS CDL Air Brakes Knowledge Test and the Skills Test in an air brake-equipped vehicle. Our CDL Air Brakes Practice Tests are perfect for helping you pass the knowledge test on the first attempt.

Based on the most recent Minnesota CDL Manual, our practice tests mirror the format of the real exam, helping you become familiar with its structure before you even walk into the testing site. The CDL Air Brakes Knowledge Test consists of 25 multiple-choice questions, and you’ll need at least 16 correct answers (80%) to pass. If you don’t pass on your first attempt, you must wait one business day and pay a fee before retesting.

Our expert-crafted Air Brakes Practice Tests help eliminate any delays and added fees. They provide instant AI-driven feedback, hints as needed, and an interactive CDL Manual. Our state-of-the-art Challenge Bank of questions remembers any you missed and recycles them to ensure you master the material quickly and efficiently. Having removed any unnecessary fluff found in other study guides, we get straight to the material needed to pass the exam. Check out our other Air Brakes Tests here: https://driving-tests.org/minnesota/mn-cdl-air-brake-practice-test/.

Passing the Air Brakes Knowledge Test opens the door to a strong career in Minnesota’s transportation industry. There is high demand in industries like agriculture and livestock transport, construction and heavy-equipment hauling, manufacturing and logistics, and regional and long-haul freight. With major roadways like Interstates 35, 90, and 94 connecting the state to the rest of the Midwest, employers like FedEx Freight, TMC Transportation, and regional carriers regularly hire air brake-qualified drivers.

Many drivers also choose to add endorsements such as T – Doubles/Triples, N – Tank Vehicles, H – Hazardous Materials, and X – Tank and Hazmat Combined. Each endorsement enhances your versatility and earning potential. Be sure to check out our series of Endorsement Practice Tests to get started: https://driving-tests.org/minnesota/mn-cdl-hazmat-practice-test/. Also, because nearly all combination vehicles use air brakes (and you’re already tackling that requirement), why not continue your studies and prepare for the Combination Vehicles Knowledge Test, which is one of the requirements needed to obtain a Class A License? Knock it all out while you have this great momentum going. Our Combination Vehicles Practice Tests can help you here as well: https://driving-tests.org/minnesota/mn-cdl-combination-test/.