- Updated for January 2025
- Based on 2025 TN commercial driver's license manual
Free Tennessee CDL Combination Practice Test 2025
Drivers of combination vehicles, such as semi-trucks and tractor-trailers, should find plenty of job opportunities in the great state of Tennessee. Good opportunities should exist in the state’s agriculture and manufacturing sectors and in the state’s role as a major regional logistics hub. Tennessee’s agriculture sector has a rather steady demand for truckers to transport products like grains, cotton, tobacco, and lumber. The state is home to several large automotive manufacturers as well as hundreds of automotive suppliers. Other large manufacturing sectors are chemicals and food and drink production. One of the largest employment sectors is research and development, leveraging the Oak Ridge science complex. Numerous high-tech firms need truck drivers to deliver equipment and supplies to them. The FedEx World Hub is located in Memphis, where it processes over 180,000 packages per day. The Port of Memphis is the fifth largest inland port in the country, equipped for heavy intermodal transportation. Truckers experienced in logistics and intermodal transportation may be able to take advantage.
Highways that support Tennessee’s role as a major logistics and intermodal hub include Interstates 40, 55, 65, 69, and 75.
To obtain a Commercial Driver’s License (CDL), you must pass a medical examination, an official knowledge exam on general commercial driving theory, and a three-part skills test. To be allowed to drive combination vehicles, you must also pass an official Combination Vehicles knowledge test on the theory of operating combination vehicles.
You’ve probably been reading the official Tennessee Commercial Driver License Manual (Tennessee CDL Handbook 2025) because the Combination Vehicles knowledge test is based on it. But maybe you doubt that’s enough? Maybe you’d like some additional help to be sure you pass that test. Great! We can help, just as we’ve already helped thousands of other aspiring drivers.
This free Tennessee CDL Combination practice test is based on the official state manual, just like the official knowledge test. It’s up to date as of January 2025. There are 25 multiple-choice questions and answers on such topics as combination braking systems, combination driving techniques, coupling and uncoupling, and pre-trip inspections. Unlike the official knowledge test, this practice test comes with our automated assistant, which can help you out on a question by giving you a hint and an explanation of the correct answer. What this practice test doesn’t have is a time limit. Take your time to improve your chances of passing the test while learning as much as you can from the experience.
Be sure to check out our other Combination practice tests too.
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
What to expect on the actual TN DMV exam
questions
correct answers to pass
passing score
Helpful links
List of questions (classic view)
- After you lock the kingpin into the fifth wheel, how should you check the connection?
- After you connect the air lines but before you back under the trailer, you should
- Which statement best illustrates the "crack-the-whip" effect?
- When you inspect the landing gear after uncoupling the trailer, where should the tractor be?
- What is the safest way to turn right from a two-way road?
- To drive a triple combination vehicle, you must have
- To prevent a rollover, cargo should be
- Combination vehicles take longer to stop when they are empty than when they are fully loaded, because
- If your vehicle gets stuck on a railroad track, you should
- Low-slung vehicles can be risky at railroad crossings because
- On a double or triple vehicle, which wheels offtrack the most?
- When you're pulling doubles or triples, the shut-off valves should always be
- On a trailer, where is the yellow antilock brake (ABS) malfunction lamp located?
- Even before antilock braking systems (ABS) were required, some vehicles already had them. How can you check if your vehicle has ABS?
- An antilock braking system (ABS) is useful
- After coupling, make sure that the air lines are not crossed. How should you do this?
- During uncoupling, you should disconnect the electrical cable and
- Before you start to uncouple, you must
- You can confirm that air is going to all brakes in your trailers by
- To uncouple a loaded trailer, after the landing gear has made firm contact with the ground, you should
- If the trailer has antilock brakes (ABS) but the tractor doesn't,
- To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
- If your test of the tractor protection valve is successful,
- The tractor protection valve is designed to close automatically if the air pressure falls into the pressure range specified by the manufacturer, typically
- As part of your vehicle inspection test, if your vehicle is equipped with air brakes and has a trailer, you will inspect the air connections between the truck or tractor and the trailer. Make sure that the ________ are locked in place and free of damage or air leaks.
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