CDL PERMIT TEST PREP · 50 STATES + DC
Answers follow your state's CDL manual.
Choose your state, class, and endorsements. Practice with a source behind each answer, then see where to study next.
Sources you can check
Choose where you test. When an answer depends on a state-specific fact, it follows that state's CDL manual.
Every explanation names the 49 CFR section and/or your state manual section, with a page number where the manual has one.
TX CDL Manual · §5.2 · p.47Select a state to see the manual title and edition used for its source references.
These are practice questions, not the questions on your state's test. Always check your state's current CDL manual before you test. This independent study aid is not affiliated with any government agency, state DMV, FMCSA, the U.S. DOT, or AAMVA.
See it in action
These small previews use the same question and controls shown in the app's design.
01 / Practice
Choose an answer. Practice shows right or wrong immediately, then points you to the manual section behind the explanation.
Missed questions stay in your wrong-answers list until you answer them correctly.
What should you do if the air pressure gauge drops below 60 psi while driving?
When air pressure falls below the warning level the brakes may fail. Stop safely and fix the leak before you go on.
TX CDL Manual · §5.2 · p.4702 / Mock test
Numbered mock tests follow your state's test length. A timer, question list, and flag help you manage your session. Review wrong, right, or all answers when you finish.
What should you do if the air pressure gauge drops below 60 psi while driving?
03 / Flashcards
Use flashcards and bookmarks in the last days before your permit test. Mark each card Know it or Study again.
Air Brakes · Card 9 of 60
Tap the card to reveal the answer.
What makes it different
When a question depends on a state-specific fact, its answer follows your selected state's CDL manual.
Each explanation points to the 49 CFR section and/or your state's manual section, with a page number where the manual has one.
Questions are stored on your device, so you can practice anywhere without a signal or an account.
Report an answer that looks wrong or differs from your state manual. You get a notification when it has been fixed.
Missed questions stay in your wrong-answers list until you answer them correctly. Previously missed mode brings back questions you got wrong.
Inside the app
Follow the path from your home screen through practice, mock tests, and review.
Start with the sections that match your state, class, and endorsements.
Read a source line with every explanation.
See right or wrong as soon as you answer.
Use a timer, flags, and a question list.
Return to the answers you missed.
Choose the sections for your license.
Flip through cards and bookmark hard questions.
See readiness, wrong answers, and bookmarked questions together.
CDL sections and pre-trip
Choose Class A or Class B and the endorsements you need. General Knowledge is always included.
Some states also have state-only tests, such as Texas Commercial Rules.
See where you stand
A readiness percentage for each section helps guide your next session. Your streak, answered count, accuracy, and passed mock tests add the bigger picture.
Progress stays on your device.
Who it is for
For new drivers preparing for a commercial learner's permit, drivers adding an endorsement, and drivers moving from Class B to Class A. Study on a break or anywhere without signal: questions are stored on your phone.
Questions drivers ask
Yes. Choose your state, class, and endorsements. When a question depends on a state-specific fact, the answer follows your state's manual, and explanations point to their source.
Yes. Questions are stored on your device so you can study offline.
No. There is no sign-up and no email needed.
General Knowledge, Air Brakes, Combination Vehicles, HazMat, Tank Vehicles, Doubles and Triples, Passenger Transport, School Bus, and pre-trip inspection. General Knowledge is always included. Some states also have state-only tests.
Yes. Missed questions stay in a wrong-answers list until you answer them correctly. Previously missed mode brings back every question you got wrong.
Every explanation names the 49 CFR section and/or your state's CDL manual section, with a page number where that manual has one. Always check your state's current manual before you test.
No. These are practice questions written from 49 CFR and facts in state CDL manuals. Always check your state's current CDL manual before you test.