Tennessee Combination Vehicles Test
You'll face 20 questions on coupling, trailer stability, and braking — and we'll help you master the stuff that kills drivers on I-24's Monteagle grade.
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Twenty questions, 80% to pass, 25 minutes. If you're planning to drive Class A in Tennessee, you need this endorsement.
Key Topics
- •Coupling and uncoupling sequence
- •Braking and stability on grades
- •Jackknife prevention
About the Tennessee Combination Vehicles Test
Topics Covered
- ✓Coupling and uncoupling procedures — Tennessee examiners watch the full sequence because a loose air line on I-24's grade can kill you.
- ✓Trailer stability and rollover prevention — curves on I-40 through the Smokies demand low speeds and proper load distribution.
- ✓Jackknife causes and prevention — ice on I-65 near Nashville makes this a real threat; know how to avoid it.
- + 3 more topics
📘 Study Tips & State Info
Tennessee DMV examiners love asking about coupling procedures in sequence. They want you to know exactly when to chock the wheels, when to connect the gladhands, and when to do the tug test. Memorize the order from the Tennessee CDL manual — it's the same order they expect.
Pay extra attention to braking on downgrades. Monteagle Mountain is a real place, and the test will ask about proper brake usage on steep grades. Don't just memorize the steps — understand why you don't ride the brakes and why engine braking matters. They phrase questions to test that understanding.
Use our practice test to get comfortable with the 25-minute timer. Most people finish in 15–20 minutes, but rushing leads to mistakes. Take your time on each question. If you're scoring 90% or higher here, you're ready for the real thing.
Tennessee Driver Services handles all CDL written tests. You can take the Combination Vehicles test at any full-service Driver Services center. Appointments are strongly recommended — walk-ins can wait hours, especially in Nashville, Memphis, and Knoxville. Book online at tn.gov/safety.
You need to pass the General Knowledge test before you can take any endorsement tests. Bring your valid Medical Examiner's Certificate (DOT physical) and proof of Tennessee residency. The fee for the combination endorsement written test is included in your CLP application fee ($45 as of 2025). If you already have a CLP, there's no extra charge — you just take the test at the counter.
If you fail, you can retake the test the next business day. There's no limit on retakes, but you pay the $45 application fee again if your CLP expires. So study hard the first time and save yourself the hassle.
About the Tennessee Combination Vehicles Test
The Combination Vehicles endorsement isn't optional if you want a Class A CDL in Tennessee. It covers everything from hooking up a trailer to keeping it stable when you're coming down Monteagle Mountain on I-24. Every tractor-trailer driver in this state has to pass it.
Tennessee's roads are nothing like the flat Midwest. You've got I-40 cutting through the Smoky Mountains, I-24's steep grades near Chattanooga, and the constant curves on I-65 north of Nashville. Those roads punish bad coupling and poor braking. The test makes sure you know how to handle them.
Weather here changes fast. Fog settles in the valleys around Knoxville. Ice storms hit Middle Tennessee in January. Crosswinds on I-40 west of Memphis can push an empty trailer sideways. The test asks about those conditions because you'll face them.
You take this test at any Tennessee Driver Services center. It's 20 multiple-choice questions, same as the federal standard. You need 16 right to pass. Our practice test mirrors the real thing — same format, same time limit, same type of questions.
Topics Covered
Study Tips
Tennessee DMV examiners love asking about coupling procedures in sequence. They want you to know exactly when to chock the wheels, when to connect the gladhands, and when to do the tug test. Memorize the order from the Tennessee CDL manual — it's the same order they expect.
Pay extra attention to braking on downgrades. Monteagle Mountain is a real place, and the test will ask about proper brake usage on steep grades. Don't just memorize the steps — understand why you don't ride the brakes and why engine braking matters. They phrase questions to test that understanding.
Use our practice test to get comfortable with the 25-minute timer. Most people finish in 15–20 minutes, but rushing leads to mistakes. Take your time on each question. If you're scoring 90% or higher here, you're ready for the real thing.
Tennessee Specific Information
Tennessee Driver Services handles all CDL written tests. You can take the Combination Vehicles test at any full-service Driver Services center. Appointments are strongly recommended — walk-ins can wait hours, especially in Nashville, Memphis, and Knoxville. Book online at tn.gov/safety.
You need to pass the General Knowledge test before you can take any endorsement tests. Bring your valid Medical Examiner's Certificate (DOT physical) and proof of Tennessee residency. The fee for the combination endorsement written test is included in your CLP application fee ($45 as of 2025). If you already have a CLP, there's no extra charge — you just take the test at the counter.
If you fail, you can retake the test the next business day. There's no limit on retakes, but you pay the $45 application fee again if your CLP expires. So study hard the first time and save yourself the hassle.