What is the CDL Exam?
The Commercial Driver's License (CDL) exam is a standardized test required by every U.S. state for anyone who wants to operate commercial motor vehicles. The exam has two main parts: written knowledge tests and a skills (driving) test.
The written portion consists of a General Knowledge test (required for all CDL applicants) plus additional tests depending on the vehicle type and endorsements you need. You must pass all required written tests to receive your Commercial Learner's Permit (CLP), which allows you to practice driving with a licensed CDL holder before taking the skills test.
Each state administers the exam through its DMV or equivalent agency. While the core content is based on federal FMCSA regulations, states may have slight variations in the number of questions, passing scores, and fees.
Everything You Need to Pass
3 core CDL exams and 4 endorsement categories with thousands of practice questions
Core Tests
Endorsements
Tanker Endorsement
Safe transport of liquid and gaseous materials in tank vehicles
Doubles and Triples Endorsement
Pulling double and triple trailers safely and legally
HazMat Endorsement
Handling, loading, and transporting hazardous materials
Passenger Vehicle Endorsement
Operating buses and vehicles designed to carry passengers
How to Study for the CDL Exam
1. Take Practice Tests
Test yourself with free practice questions right here on our website. This helps you identify weak areas and get comfortable with the exam format.
2. Download the App
Get the CDL Help app for access to the full database of 3,000+ practice questions, bookmarking, progress tracking, and study tools to take your preparation to the next level.
3. Focus on Weak Areas
Review questions you got wrong, read the explanations, and retake tests until you consistently score above the passing threshold (usually 80%).
4. Enroll in a CDL Truck Driving School
Once you pass the written permit exam, enroll in an accredited CDL training program to complete your behind-the-wheel training and prepare for the driving skills test.
CDL Classes: A, B, and C
Class A
Required for combination vehicles with a GCWR of 26,001+ lbs when the towed vehicle is over 10,000 lbs. Includes tractor-trailers, tanker trucks, flatbeds, and livestock carriers.
Class B
Required for single vehicles with a GVWR of 26,001+ lbs, or such a vehicle towing a trailer under 10,000 lbs. Includes straight trucks, large buses, segmented buses, and box trucks.
Class C
Required for vehicles that don't fit Class A or B but are designed to transport 16+ passengers or carry hazardous materials. Includes small HazMat vehicles and passenger vans.
CDL Requirements by State
Each state has its own CDL fees, testing procedures, and requirements. Find your state to see the specifics.
California
Free CDL Practice Test
Texas
Free CDL Practice Test
Florida
Free CDL Practice Test
New York
Free CDL Practice Test
Illinois
Free CDL Practice Test
Pennsylvania
Free CDL Practice Test
Ohio
Free CDL Practice Test
Georgia
Free CDL Practice Test
North Carolina
Free CDL Practice Test
Michigan
Free CDL Practice Test
New Jersey
Free CDL Practice Test
Virginia
Free CDL Practice Test
New English Language Proficiency Enforcement — We've Got You Covered
In 2025, federal authorities began strictly enforcing English language proficiency requirements under 49 CFR §391.11. Drivers who cannot demonstrate sufficient English comprehension during roadside inspections are being placed out of service — hundreds have already been affected.
Since 2022, CDL Help has been helping drivers who are committed to doing things the right way — giving motivated drivers the tools to genuinely learn the material and earn their license through real understanding. Long before the enforcement wave, we built a dedicated English language practice feature directly into our app, because we knew that true road safety starts with comprehension — understanding highway signs, responding to inspectors, and communicating clearly on the job.
Stay Compliant
Meet federal ELP requirements confidently
Learn While You Study
Practice English alongside CDL material
Safer Roads
Understanding signs and instructions saves lives
Your Path to a Commercial Driver's License
To get a CDL, you must first study for and pass the permit exam at the DMV. After you receive your permit, you can take commercial vehicle driving classes and complete the required training. The final step is passing the official driving exam to earn your CDL. Our practice tests help you prepare for the DMV permit exam with real-style questions, and we also provide extra study materials and helpful resources to guide you through the process.
What Drivers Are Saying
Join 30,000+ drivers who prepared with CDL Help
“The practice tests are spot on. I used the free tests first, then downloaded the full app for all the questions. Best CDL prep tool out there.”
James T.
November 2024
“I spoke English, but could use some improvement, especially when it comes to industry terminology. The app helped me learn the material and pick up the right terms at the same time.”
Carlos M.
January 2025
“My husband used CDL Help to get his CDL and recommended it to me. The explanations after each question really help you understand the material, not just memorize answers.”
Maria L.
March 2025
Want access to all 3,000+ practice questions? Get the full app.
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