Quiz to test your knowledge
Free online tests based on official CDL exams — General Knowledge, Air Brakes, Combination, and endorsements.
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Pass the CDL test. Study in your language.
Practice CDL questions in Spanish, Russian and 8 more languages — and get ready for the real English exam. Built by drivers, for drivers.
4.95,800+ ratings2,500+ questions
Free practice questions to start. Unlock all 2,500+ with a subscription.
Multi-language interface
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Flashcards and useful resources
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Are you ready for the CDL test? Find out in 3 questions.
Take the test simulator, find out your level. Prepare and reinforce material with our app, flashcards, quizzes.
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Frequently Asked Questions
In which states can I take exams in Russian?
Exams in Russian are available in Washington, Oregon, New York, New Jersey, Florida and some other states.
How many questions are on the exam?
General Knowledge - 50 questions, Air Brakes - 25 questions, Combination - 20 questions.
How many mistakes can I make?
You need to answer 80% of questions correctly to pass.
Can I take the exam without knowing English?
In some states the written knowledge test is offered in other languages (Spanish is the most common), but this varies by state and the driving test is always in English. Federal rules now require English proficiency to drive commercially, so you can study in your language but should plan to build the English you'll need.
How to get access to all tests? Is the app paid?
The basic version is free. Full access to all tests and features is available by subscription.
How many questions are in the app and what's the difference between 'Express' and 'Full'?
The app has over 1200 questions. Express includes basic tests, Full - all tests and endorsements.
Did you really add all possible questions?
We regularly update the question bank based on official DMV sources from each state.
How long does it take to prepare for the CDL exam?
Most students need 2-4 weeks of regular practice to prepare for the written CDL exam. Using our app with daily practice sessions of 30-60 minutes significantly increases your chances of passing on the first attempt.
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