MN CDL Air Brakes “Endorsement” Practice Test 2 2025

The “L” restriction on your Minnesota Commercial Driver’s License (CDL) will put the brakes on increasing your driving opportunities. With an “L” restriction, commercial drivers are prohibited from operating air-brake-equipped vehicles. Most semi-trucks and full-size buses use air brakes to regulate their speed while transporting heavy loads. Sharp turns, adverse weather, and heavily congested traffic require you to slow down or come to a complete stop to avoid accidents. Prospective employers across multiple sectors, such as CHS (agriculture) and 3M (manufacturing), require drivers to be air-brake qualified for many of their driving positions. With adequate training, you can remove your “L” restriction and get more mileage from your CDL.

Our Minnesota DVS CDL air brake “endorsement” practice test offers an innovative study method to teach the information you must know to remove the “L” restriction. You will be required to conduct a physical inspection of the air brake system, drive a vehicle equipped with air brakes, and pass an official Air Brakes knowledge test to remove the air brake restriction. You must correctly answer at least 80% of the 25 questions on the official knowledge test to pass. The practice test uses 30 questions, similar to those on the official knowledge test, to evaluate your current knowledge level and identify the information you should study more to increase it. The practice test is an effective and time-efficient resource that helps you create a study plan to systematically eliminate your misunderstandings and achieve a passing score.

This Minnesota DVS CDL air brake “endorsement” practice test enhances your ability to absorb the information you need to learn to pass the official knowledge test. The practice test is based on the most recent Minnesota DVS CDL manual (Minnesota CDL Handbook 2025) and is up to date as of September 2025. If you submit an incorrect answer, the practice test takes information directly from the CDL manual to give you a thorough explanation of the correct one. You will be presented with the most authoritative information for developing a clear understanding of air brake systems. Using this information, you can understand the logic supporting the answers you provide and have confidence in applying them to various driving scenarios.

In comparison, traditional study methods are one-dimensional and do not provide additional instruction to overcome your learning obstacles. Traditional study methods are designed to train you to memorize the answers to the questions. If you get a question wrong, it is up to you to locate the information needed to correct your answer. This approach can be frustrating, leading you to waste valuable study time and consult potentially unreliable sources for the information you need. The practice test makes the relevant information for correcting your answers immediately available, boosts your confidence, and increases your chances of passing the official knowledge test on your first try..

Duluth boasts of being the “Zenith City of the Unsalted Seas,” but you can become a well-seasoned driver using the practice tests at https://driving-tests.org/minnesota/.