Free TN CDL Diagnostic Test
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Based on 2024 TN commercial driver's license manual
- Triple-checked for accuracy
- Updated for August 2024
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What you need to know
To get a rough idea of how much you know about commercial driving rules in Tennessee, try our TN CDL diagnostic test. It contains 30 multiple-choice questions on a variety of topics in commercial driving: air brakes, hazardous materials, buses, combination vehicles, and tanker trucks. This test will help you quickly identify gaps in your knowledge of commercial driving, which will be especially useful if you’re just starting to prepare for the CDL knowledge exams. Each practice question includes a picture and has four possible answers. Choose the most complete and correct answer for each question. Each question also comes with an optional hint if you need it and an explanation of the correct answer. Try our CDL diagnostic test and see whether you are ready for the real thing. Good luck, and drive safely!
What to expect on the actual exam
questions
correct answers to pass
passing score
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