Practice Test Instructions:
- Choose the best answer and receive instant feedback.
- Click next to go to the next question.
- Check your results at the end.
- Start a new version and keep studying!
Each test contains questions based on information in the official driver's handbook.
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How to Use this Free CDL Written Practice Test
Each free practice test includes 15 multiple-choice questions based on the CDL manual. You can take the test as many times as you want.
Each time you take the test, you will receive a new set of 15 questions. The questions are generated randomly, so you can be sure that you are practicing a wide range of topics.
Before you know it, you will be ready to pass your written test and get your Commercial Learner’s Permit!
Get some more practice with the CDL Combination Vehicles Exam Simulation.
What is the CDL Combination Vehicles Knowledge Test?
- Number of Questions: 20
- Passing Score: 80%
- Format: Multiple Choice & True/False
The CDL Combination Vehicles Knowledge test is another standard test required for many commercial vehicles.
The Combinations exam is based on the CDL manual and tests your knowledge on the section that covers Combination Vehicles (Section 6). The topics in this section include:
- Driving a combination vehicle safely.
- Combination Vehicle air brakes.
- Combination Vehicle anti-lock brakes.
- Coupling and Uncoupling.
- Combination vehicle inspection.
There are 20 multiple choice and true/false questions. You’ll need a score of 80% to pass (16 correct answers).
To prepare for the Combination Vehicles written test you can study the appropriate section of the CDL Manual and take some practice tests.
Who needs to take the Combination Written Test?
Passing the Combination Vehicle knowledge exam is required for towing trailers in a commercial vehicle.
Most Class A CDL vehicle and many Class B CDL vehicles require you to pass the Combination Vehicles test. It’s also a prerequisite for many of the other CDL endorsements.
Passing the Combinations test will make you eligible for many other CDL endorsements and allow you to begin practicing for your skills test in a combination commercial vehicle.