CDL Prep Practice Test 2026

Prepare for your Commercial Driver’s License knowledge exams with CDL Prep Practice Test 2026.

Study the main CDL sections and endorsements based on topics from the FMCSA CDL program and state CDL manuals:

• General Knowledge
• Air Brakes
• Combination Vehicles
• Hazardous Materials (H)
• Tank Vehicles (N)
• Doubles / Triples (T)
• Passenger (P)
• School Bus (S)

IMPORTANT DISCLAIMER
This app is an independent study tool only. It does NOT represent, and is NOT affiliated with, endorsed by, sponsored by, or connected to any U.S. federal, state, or local government entity, including FMCSA, any state DMV, or motor vehicle agency. We do not provide official government services, licensing, CDL testing, or commercial driver credentials.

OFFICIAL GOVERNMENT INFORMATION SOURCES
CDL rules and knowledge-test topics are based on official U.S. government publications. Always verify the latest requirements in the official FMCSA materials and your state’s CDL handbook.

FMCSA — Commercial Driver’s License Program:
https://www.fmcsa.dot.gov/cdl

FMCSA — How to get a CDL:
https://www.fmcsa.dot.gov/registration/commercial-drivers-license/how-do-i-get-commercial-drivers-license

FMCSA — CDL Manual guidance (use your state manual):
https://www.fmcsa.dot.gov/registration/commercial-drivers-license/cdl-manual

USA.gov — State motor vehicle / DMV services:
https://www.usa.gov/state-motor-vehicle-services

eCFR — Title 49 FMCSA regulations:
https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III

Always review your official state CDL manual and DMV/.gov website for state-specific requirements before your exam.

HOW IT HELPS YOU PASS
• Practice by section with multiple-choice questions
• Study mode with explanations after each answer
• Timed practice tests that mirror typical exam length
• Review missed questions and track your progress
• Aim for 80% — the usual CDL passing score

FREE TO START
Try 5 free questions in each section. Unlock the full question bank with a one-time purchase — no subscription. Study offline anytime and build the confidence you need before test day.