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Lone Star Transportation and DART are examples of Metroplex employers offering great driving opportunities, but you’ll have a better chance of securing one as an air brake-qualified driver. The presence of an “L” restriction on your Texas Commercial Driver’s License (CDL) prohibits you from driving a vehicle equipped with air brakes and limits your driving opportunities. Air brakes are an essential safety feature on most semi-trucks and full-size buses that allow you to reduce your speed and come to a complete stop while hauling heavy loads. An in-depth knowledge of air brake operations will keep you safe while managing your way through rapidly changing road conditions, such as sharp turns and heavily congested traffic. However, developing the necessary skills requires expert instruction.
Our Texas DMV CDL air brake “endorsement” practice test is a springboard for you to develop the skills necessary for removing the “L” restriction on your CDL. You can successfully remove the “L” restriction by demonstrating your ability to drive a vehicle equipped with air brakes, inspect the air brake system, and pass an Air Brake Knowledge Test. The practice test provides you with the encouragement and thorough instruction needed to meet these requirements. With its 30 questions, the practice test assesses your proficiency level and creates a starting point for giving you the information you should study to increase it. You must correctly answer at least 80% of the 25 questions on the official knowledge test to pass, and the practice test has a plan for your success.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
By addressing your specific learning obstacles, this Texas DMV CDL air brake “endorsement” practice test provides a groundbreaking study method. The practice test is interactive and provides feedback on your progress in learning air brake operations. If you get a question wrong, the practice test responds with a detailed explanation of the correct answer. Based on the most recent Texas DMV CDL manual (Texas CDL Handbook 2025) and up to date as of December 2025, the practice test delivers the authoritative information to prepare you for the challenges of the official knowledge test. You will be equipped with authoritative information that can be confidently applied to your driving practices.
In comparison, the more traditional study methods are less effective in expanding your knowledge. Traditional study methods are one-dimensional and train you to memorize the answers to the questions without helping you correct your wrong answers. If you need additional instruction, you must search for the information on your own and waste valuable study time consulting numerous resources. The practice eliminates this inconvenience and gives you immediate access to the information sought. With its engaging approach, the practice test provides expert instruction, inspires confidence, and makes it possible for you to pass the official knowledge test on your first attempt.
The Burnt Bean Company in Seguin is rumored to have the best barbeque, but you’ll be confirmed to have top-notch driving skills with the practice tests at https://driving-tests.org/texas/.
Driver’s Ed is - nobody wants to set foot inside the DMV. 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 TX 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 DMV.
