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  • Updated for May 2025
  • Based on 2025 GA commercial driver's license manual

Free Georgia CDL Combination Practice Test 2025

In the great state of Georgia, there should be jobs aplenty for drivers of combination vehicles, such as semi-trucks and tractor-trailers. Reasons include the state’s pro-business economic climate, its numerous growing economic sectors, and its role as a strategic hub for commerce and logistics in the southeast United States.

Hartsfield-Jackson Atlanta International Airport is one of the busiest airports in the world, equipped for refrigerated storage of perishables. The Port of Savannah is the single largest and fastest-growing container terminal in the country. Both may need truckers with intermodal experience to transport cargo. Note: Airports and seaports are considered secure areas. You may need a Transportation Worker Identification Credential (TWIC) card to pick up cargo at these facilities.

Georgia’s vibrant economic sectors include technology, manufacturing, agriculture, logistics, transportation, film, and convention and trade show businesses, all of which use truckers.

Major commercial routes include Interstate 75 (heavily used by truckers traveling south to Florida or north as far as Michigan), Interstate 85 (used by truckers traveling from Georgia to neighboring states), Interstate 20 (used by truckers traveling to or from Texas), and U.S. Route 441 (used by truckers hauling products from agricultural areas).

For you to be allowed to drive heavy combination vehicles, the General Knowledge test on general commercial driving theory isn’t the only knowledge test you’ll have to pass. You’ll also have to pass the Combination Vehicles knowledge test on the theory of driving combination vehicles and likely some other knowledge tests. You’ve probably started studying the official Georgia Commercial Driver’s Study Guide (Georgia CDL Handbook 2025), especially Section 6 (Combination Vehicles), because the official Combination Vehicles knowledge test is based on this official study guide. However, we bet you’re here because you want to get some more help to pass the knowledge test than you’re getting from this handbook. We’ve helped many aspiring commercial drivers, and we can help you too.

This free Georgia CDL Combination practice test, one of several we offer, is based on the official state commercial driving manual, just like the official knowledge test. It’s up to date as of May, 2025. There are 25 multiple-choice questions and answers on such topics as combination braking systems, combination driving techniques, coupling and uncoupling, and vehicle inspections. Unlike the official knowledge test, this practice test comes with our automated assistant, which can help you with a question by supplying a hint and an explanation of the correct answer. There is no time limit. Take your time and learn as much as you can. If you’re stumped by a question, look up the answer in the official manual before proceeding with the rest of the practice test.

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What you need to know

4.53 out of 5 • 60 votes
9 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

What to expect on the actual GA DDS exam

20

questions

16

correct answers to pass

80%

passing score

List of questions (classic view)

  1. After you lock the kingpin into the fifth wheel, how should you check the connection?
  2. After you connect the air lines but before you back under the trailer, you should
  3. Which statement best illustrates the "crack-the-whip" effect?
  4. When you inspect the landing gear after uncoupling the trailer, where should the tractor be?
  5. What is the safest way to turn right from a two-way road?
  6. To drive a triple combination vehicle, you must have
  7. To prevent a rollover, cargo should be
  8. Combination vehicles take longer to stop when they are empty than when they are fully loaded, because
  9. If your vehicle gets stuck on a railroad track, you should
  10. Low-slung vehicles can be risky at railroad crossings because
  11. On a double or triple vehicle, which wheels offtrack the most?
  12. When you're pulling doubles or triples, the shut-off valves should always be
  13. On a trailer, where is the yellow antilock brake (ABS) malfunction lamp located?
  14. Even before antilock braking systems (ABS) were required, some vehicles already had them. How can you check if your vehicle has ABS?
  15. An antilock braking system (ABS) is useful
  16. After coupling, make sure that the air lines are not crossed. How should you do this?
  17. During uncoupling, you should disconnect the electrical cable and
  18. Before you start to uncouple, you must
  19. You can confirm that air is going to all brakes in your trailers by
  20. To uncouple a loaded trailer, after the landing gear has made firm contact with the ground, you should
  21. If the trailer has antilock brakes (ABS) but the tractor doesn't,
  22. To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
  23. If your test of the tractor protection valve is successful,
  24. The tractor protection valve is designed to close automatically if the air pressure falls into the pressure range specified by the manufacturer, typically
  25. 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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