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 Plans| 90-100 | => | 12% |
| 80-89 | => | 23% |
| 70-79 | => | 19% |
| 60-69 | => | 17% |
| <60% | => | 29% |
An air brake-qualified driver has a greater chance of taking advantage of the best driving opportunities offered by employers, such as System Transport and King County Metro. If you’re expecting to lock down one of these jobs, an ”L” restriction on your Washington Commercial Driver’s License will likely disqualify you. An “L” restriction does not permit you to operate any vehicle equipped with air brakes. Since most semi-trucks and full-size buses are equipped with air brakes, you will be restricted from driving these vehicles. Changing road conditions can demand quick reaction, and air brakes make it possible to slow down or come to a complete stop while transporting heavily weighted loads. Heavy rain, tight turns, and heavily congested traffic require you to regulate your speed, and a comprehensive understanding of air brake systems is necessary to preserve your safety.
Our Washington DOL CDL air brake “endorsement” practice test provides an innovative study method to help you become an air brake-qualified driver. Removing the “L” restriction from your CDL is accomplished by passing a skills test (including conducting an inspection of the air brake system) and an official Air Brakes Knowledge Test. You must correctly answer at least 80% of the 25 questions on the official knowledge test to earn a passing score. The practice test is a useful tool for establishing a baseline of your current knowledge and targeting your specific learning barriers. Using 30 questions, the practice test gives you an opportunity to exhibit your knowledge and points out the information you must learn to achieve your goals.
This Washington DOL CDL air brake “endorsement” practice test produces the maximum benefit of your study time. The practice test is based on the most recent Washington DOL CDL manual (Washington CDL Handbook 2025) and is up to date as of December 2025. If you get a question wrong, you can depend on the practice test to provide a full explanation of the correct answer with information from the CDL manual. You can place your full confidence in the guidance provided and apply it to various driving scenarios you may see on the official knowledge test. The innovative approach of the practice test is more effective than traditional study methods in rapidly developing your understanding of air brakes.
Traditional study methods are designed to be one-dimensional and not assist you in finding additional information to fill your knowledge gaps. Your success depends upon your ability to memorize the answers to the questions. This approach is detrimental to your progress because you are more likely to become stuck in your learning process and spend valuable study time searching for the information you need. The practice test makes it possible for you to pass the official knowledge test on your first try by conveniently providing the information you need to learn and explaining it to you in a detailed manner.
Pickleball was invented to eliminate boredom on Bainbridge Island, and you can acquire exciting driving skills with the practice tests at https://driving-tests.org/washington/.
Driver’s Ed is - nobody wants to set foot inside the DOL. 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 WA 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 DOL.
