If you’re getting ready to take your Commercial Driver’s License permit exam, you’ve come to the right place. Our Free CDL General Knowledge Practice Test #1 includes 25 multiple-choice questions designed to help you build confidence before test day.
Each question includes an explanation after you answer, so you can understand not only which answer is correct, but also why it is correct. This approach helps reinforce important concepts instead of simply memorizing answers.
Whether you're applying for a Class A, Class B, or Class C CDL, passing the General Knowledge exam is one of the first steps toward earning your commercial driver's license. The more quality practice tests you complete, the better prepared you'll be for the real exam.
What Is the CDL General Knowledge Test?
The CDL General Knowledge test is required for nearly every commercial driver's license applicant in the United States. It covers the basic information every commercial driver should know before operating a commercial motor vehicle.
Topics commonly include:
- Safe driving practices
- Vehicle inspections
- Cargo safety
- Braking techniques
- Railroad crossings
- Emergency procedures
- Hazard awareness
- Night driving
- Following distance
- Defensive driving
Every state bases its exam on its CDL manual, although the number of questions and passing score can vary slightly.
How Many Questions Are on This Practice Test?
This practice test contains 25 multiple-choice questions selected to help prepare you for many of the topics found on the real CDL General Knowledge exam.
Unlike simple flashcards, every question includes a detailed explanation so you can understand the reasoning behind the correct answer.
Is This the Same as the Real CDL Test?
No.
This is an educational practice test created to help reinforce important trucking knowledge. While many questions cover similar topics found on official CDL exams, your actual test may contain different questions or wording depending on your state.
Always study your state's CDL manual in addition to taking practice tests.
What Score Should You Aim For?
Although many states require a passing score of around 80%, don't settle for simply passing.
A good goal is consistently scoring 90% or higher on practice tests before scheduling your permit exam. If you're regularly reaching that level, you'll likely feel much more confident on test day.
Why Practice Tests Work
Reading the CDL manual is important, but actively answering questions helps strengthen your memory and improve recall.
Practice tests help you:
- Identify weak areas
- Improve confidence
- Become familiar with question formats
- Learn from mistakes
- Reinforce safe driving habits
Many successful CDL students combine manual study with repeated practice testing.
What Happens After You Pass?
Once you've passed your General Knowledge exam, you may continue working toward other CDL requirements depending on the type of license you're earning.
Many drivers also complete additional endorsement exams, such as:
- Air Brakes
- Combination Vehicles
- Tanker
- Hazmat
- Passenger
- School Bus
- Doubles and Triples
Each endorsement allows you to operate additional types of commercial vehicles.
Continue Practicing
One practice test isn't enough to fully prepare for your CDL permit exam.
The best results come from taking multiple practice tests that cover different question sets and reviewing any questions you miss.
As Trucking Resource continues to grow, we'll be adding many more free CDL practice tests covering General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Tankers, and other endorsements.
Explore More CDL Resources
If you're just beginning your CDL journey, you may also find these guides helpful:
- How to Get a CDL: Step-by-Step Guide
- How Much Does It Cost to Get a CDL?
- How Long Does It Take to Get a CDL?
- Class A vs. Class B vs. Class C CDL: What's the Difference?
We'll continue adding free CDL practice tests and educational guides to help you prepare for every step of earning your Commercial Driver's License.