All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All PlansRemoving the air brake restriction from your CDL is vital for expanded job opportunities in Indiana because most semi-trucks and tractor-trailers rely on air brakes for safe navigation. Without passing the Indiana BMV CDL Air Brakes Knowledge Test, your CDL will include the restriction “L,” preventing you from operating commercial motor vehicles (CMVs) with air brakes. You will see shortly that this “L” restriction can significantly damage your job prospects in this market. Failing the air brakes test in Indiana results in a one-day waiting period and a retest fee should you decide to retake the test. Our Indiana BMV CDL Air Brakes Practice Tests ensure you pass your knowledge exam on the first attempt.
From the flat plains in the north and central parts of the state to the rolling hills in the south, hauling cargo across Indiana demands the use of air brakes. Additionally, the state’s icy winters require the reliable stopping power of air brakes. Major urban areas (like Indianapolis) and the key transportation routes, including I-65 (north-south freight corridor), I-70 (high-traffic east-west route), and I-69 (vital freight corridor), require air brake-qualified drivers. Let’s look at some of the jobs you lose access to by not testing to have the restriction “L” removed.
The Hoosier State relies on drivers with the air brake qualification in key industries, including manufacturing, agriculture, and logistics (Amazon and Walmart distribution hubs). Other major companies requiring this qualification include Old Dominion Freight Line, Knight Transportation, FedEx, and UPS in the logistics industry, as well as IndyGo and Miller Transportation (Indianapolis) in the public transit and charter bus industries. Indiana also has thousands of full-size school buses that require air brake-qualified drivers. The “L” restriction makes the above-listed jobs unattainable.
The written Air Brakes knowledge test features multiple-choice questions based on the state’s CDL manual (Indiana CDL Handbook 2025) and requires a score of at least 80% to pass. Have no fear! Our CDL Air Brakes Practice Tests cover all essential knowledge for the official BMV Air Brakes Knowledge Test. As a bonus, the information you learn will also be useful as you prepare to pass your skills test.
Our practice tests feature immediate feedback on all responses and mimic the official knowledge test. This two-pronged, scientifically proven approach helps you learn faster and ensures you pass the knowledge test.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
Last verified for accuracy: October 2025 (reviewed weekly)
questions
correct answers to pass
passing score
Driver’s Ed is - nobody wants to set foot inside the BMV. 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.
