ME CDL Air Brakes Practice Test 4 2025

Are you looking to drive air brake-equipped commercial motor vehicles (CMVs) on Maine’s highways and coastal routes? Your first milestones are passing the Maine CDL Air Brakes Knowledge Test and the Skills Test in an air brake-equipped vehicle. These tests are required to remove the “L” restriction from your Commercial Driver’s License (CDL). The Air Brakes Knowledge Test includes 25 multiple-choice questions, and you’ll need to score at least 80% (16 correct answers) to pass. If you fail, you must wait one business day before retesting and may need to pay a retest fee. If you fail either test? The “L” restriction remains, meaning you may not legally operate air brake-equipped vehicles (which make up the majority of CMVs). This limitation can have a major negative impact on your career. Let’s take a look at how to remove this limitation once and for all.

Our Free Maine CDL Air Brakes Practice Tests are based directly on the latest CDL Manual and mirror the official exam format. With each response, you will receive instant feedback, hints, and AI-driven explanations to speed the learning process. A key feature of our practice series is the Challenge Bank, which remembers any missed questions and asks them again until you demonstrate mastery of all the tested material. Once you’ve aced this practice test, try another from our series: https://driving-tests.org/maine/me-cdl-air-brake-practice-test/.

Major industries in this state include logging and forestry, paper and pulp production, trucking and freight, construction and infrastructure, fishing, marine and port operations, heating oil, and propane delivery, waste management, and public transportation. Some of the larger companies that require air brake-qualified drivers are Casella Waste Systems, Cianbro, Dead River Company, Hannaford Transportation, Hartt Transportation Systems, Irving Forest Products, Irving Oil, and Sappi Somerset Mill. With so many industries and organizations depending on air brake-qualified drivers, it’s a great career move to pass these tests!

Since most combination vehicles use air brakes and you’re covering that base here already, we also encourage you to consider preparing for the CDL Combination Vehicles Knowledge Test (one of the requirements for obtaining a Class A CDL). Try one of our Practice Tests here: https://driving-tests.org/maine/me-cdl-combination-test/. A second consideration is to add endorsements, such as T – Doubles/Triples, N – Tank Vehicles, H – Hazardous Materials, and X – Tank & Hazmat Combination, to your CDL. Our Maine CDL Endorsement Practice Tests can help you prepare for this as well: https://driving-tests.org/maine/me-cdl-hazmat-practice-test/.