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Removing the “L” restriction from your Commercial Driver’s License (CDL) is a crucial step for many commercial motor vehicle (CMV) drivers. That tiny little “L” code makes it illegal for you to operate CMVs equipped with air brakes and constitutes a serious job limitation on your CDL. If you are looking for the best resource for passing the New Jersey MVC CDL Air Brakes Knowledge Test, then you are at the right place and on track for a huge jump in job opportunities. In New Jersey, air brake-qualified drivers are required in multiple major industries, including construction, pharmaceuticals, port logistics, tourism, and waste management. Major employers, such as Academy Bus Lines, Amazon Transportation, Caterpillar equipment dealers, FedEx Freight, NJ Transit, and every school district operating full-size buses, all require air brake-qualified drivers. With so much demand, our experts have crafted a series of New Jersey CDL Air Brakes Practice Tests to help you ace the official exam on your first attempt.
In order to have the “L” removed from your CDL, you’ll need to pass the New Jersey MVC CDL Air Brakes Knowledge Test and the Skills Test in an air brake-equipped vehicle. In New Jersey, a failed air brakes test requires a seven-day waiting period (quite a bit longer than in most other states) and a potential fee before you can test again. Avoiding that delay and added fees is especially paramount in this state.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
To pass the official written multiple-choice Air Brakes exam, you must score at least 80%. Our Air Brakes Practice Tests are based on the MVC exam format. You’ll learn how modern air brake systems work, proper inspection steps, emergency braking procedures, dual-system operation, low-pressure warnings, and governor cycle behavior, and components such as tanks, compressors, valves, and brake chambers.
Our practice tests include real-time feedback, which has been shown to increase retention and speed learning. They also feature an interactive CDL Manual and a Challenge Bank that recycles missed questions until answered correctly. Once you’ve gotten a handle on this practice test, try another: https://driving-tests.org/new-jersey/nj-cdl-air-brake-practice-test/.
While you’re at it, you should consider adding valuable endorsements to your CDL, such as (N) Tanker, (H) Hazardous Materials, and (T) Doubles/Triples. Our Practice Tests can help you prepare for these knowledge tests as well: https://driving-tests.org/new-jersey/nj-cdl-hazmat-practice-test/. Also, check out our Combination Vehicles Practice Tests to prepare for the official combination exam, one of the major steps in obtaining a Class A License: https://driving-tests.org/new-jersey/nj-cdl-combination-test/.
Driver’s Ed is - nobody wants to set foot inside the MVC. 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 NJ 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 MVC.
