Core practice
Study by module, review missed and saved questions, build custom sessions, and read handbook-style explanations.
iOS study app
Universal Core CDL knowledge practice.
Practice General Knowledge, Air Brakes, and Combination Vehicles with explanations, weak-domain drills, and on-device progress — no account required.
Practice exams
Core practice exams (20 / 40 / 60) with a three-choice format and an 80% practice pass mark.
Local progress
Track accuracy, streaks, Must-Know numbers, and exam history offline without creating an account.
Independent study aid
CDL Exam Prep is not affiliated with, endorsed by, or sponsored by FMCSA, any state DMV, or any commercial driving school. It does not provide ELDT certification, administer official exams, or issue licenses. Practice questions are original study materials, not actual exam questions. Always verify your state’s current CDL manual. Passing is not guaranteed.