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Free Massachusetts CDL Combination Practice Test 2024

Part of mandatory Entry-Level Driver Training Course Based on 2024 MA commercial driver's license manualAvailable in EN, ES
25questions
5mistakes allowed
80%passing score

Driving a semi-truck in Massachusetts can be a challenge. You’ll grapple with famously unpredictable weather (which can include dense fog, heavy snowstorms, and Nor’easters) and bustling industrial centers connected by frequently congested two-lane roads.

You must obtain a Class A Commercial Driver’s License (CDL) to drive heavy combination vehicles, such as tractor-trailers or semi-trucks. The requirements for this license include passing the General Knowledge test and the Combination Vehicles knowledge test and passing the CDL skills test in a combination vehicle. Then you may legally drive vehicles where the cab is separate from the trailer, which requires special handling skills and knowledge.

So, if your dream is to haul cargo in a Peterbilt across the country, you’ll have to pass the Combination Vehicles knowledge test. This test covers topics like coupling and uncoupling, inspection procedures and how to safely operate combination vehicles.

The official 2024 CDL manual covers everything you need to know about combination vehicles to pass the knowledge test. It contains essential information, and your knowledge of the subject will be evaluated by the written exam, which has a total of 25 questions. To pass, you’ll need a score of 80%.

All questions have multiple answer options, but only one is correct. Unlike the official written exam, there is no time limit on our practice tests. Since you are still in the learning phase, there is no need to rush through the questions. While these tests offer a great way of evaluating your knowledge and scoring your submissions, they can also be used as a learning tool.

After each question, you’ll receive immediate feedback with a detailed explanation of the correct answer. Students use this feature to their advantage by memorizing the correct answer while developing a better understanding of driving combination vehicles.

If you want to have a successful trucking career and be called “king of the road,” you’ll have to master many aspects of commercial driving. Only practice makes perfect, and there’s enough time for you to log thousands of hours behind the wheel of a powerful semi-truck. But the learning process comes first, and it shouldn’t be rushed or skipped. Solidify your understanding of CDL combination vehicles with our detailed Combination test collection, specifically designed to prepare you for the written exam.

Perfect for

  • First-time MA CDL and CLP applicants
  • CDL holders adding endorsements
  • MA CDL renewal applicants
MA commercial driver's license

What to expect on the actual exam

How many questions20
How many correct answers to pass16
Passing score80%
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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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