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 PlansIf your goal is to remove the “L” restriction from your CDL in order to be able to operate air brake-equipped vehicles, then you’ve come to the right place! An “L” restriction on your CDL makes it illegal to operate any air-brake-equipped commercial motor vehicle (CMV) in the state. And that restriction will remain until you successfully pass both the Montana MVD CDL Air Brakes Knowledge Test and the Skills Test in an air brake-equipped vehicle. If you attempt either test and fail, Montana requires you to wait one business day before retesting, and a retest fee may apply. Our Montana CDL Air Brakes Practice Tests are designed to help you pass on the first attempt and avoid delays and added fees.
The MVD Air Brakes Test is based on the CDL Manual and covers air brake system components, dual-air systems, proper air brake inspection, using and maintaining air brakes, and emergency braking procedures. You must score 80% or higher to pass. Passing the written test also helps prepare you for the required skills test, which evaluates pre-trip inspections, testing for air leaks and pressure loss, and safe operation of an air-brake-equipped vehicle.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Our practice tests mimic the official exam and use the same multiple-choice format. You’ll receive real-time feedback, AI-driven explanations, an interactive CDL Manual, and a Challenge Bank designed to remember any questions you miss and present them again until you master them. Check out another practice test from our series: https://driving-tests.org/montana/mt-cdl-air-brake-practice-test/.
From the Rocky Mountain peaks to the windy High Plains, driving conditions require the reliability and stopping power that air brake systems provide. Major roadways where air-brake-qualified drivers are essential include I-90, I-15, and I-94. Industries requiring air-brake-qualified drivers include agriculture and livestock transport, energy and mining, freight and logistics, tourism and passenger transport, and school districts across the state. In a rural state like Montana, losing access to air-brake-equipped vehicles means losing access to the bulk of CMV jobs. Major employers who regularly seek air brake-qualified drivers include CHS Inc., ExxonMobil, Greyhound Lines, Montana Resources, RMA Energy, Total Transportation, UPS, XPO Logistics, and various charter bus and tour companies. There are simply too many opportunities to ignore.
Consider also adding endorsements to your CDL, such as (N) Tanker, (H) Hazardous Materials, and (T) Doubles/Triples. Study with our Montana Practice Tests: https://driving-tests.org/montana/mt-cdl-hazmat-practice-test/. Additionally, check out our Combination Vehicles Practice Tests to fulfill a major step in obtaining a Class A License: https://driving-tests.org/montana/mt-cdl-combination-test/.
Driver’s Ed is - nobody wants to set foot inside the MVD. 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 2025 MT 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 MVD.
