Study guides

DMV permit and CDL study guides.

Short, honest guides for permit and CDL learners—then free practice for every U.S. state with explanations and official agency links.

How DMV permit tests work

What knowledge tests usually cover, how scoring works, and how to use practice without memorizing the wrong material.

CDL endorsements explained

A plain-language map of general knowledge, air brakes, combination vehicles, hazmat, tanker, doubles, passenger, and school bus.

A practical study plan

A one-week loop: topic practice, explanations, weak-area review, then an exam-style run before test day.

Printable road-signs chart

Every sign shape and color on U.S. knowledge tests, with meanings — a one-page printable cheat sheet.