- Updated for January 2025
- Based on 2025 WI commercial driver's license manual
Free Wisconsin CDL Combination Practice Test 2025
Drivers of combination trucks (such as semi-trucks and tractor-trailers) should be in high demand in several of Wisconsin’s key economic sectors. Wisconsin is a leading agricultural state, especially in the production of cheese, butter, and milk, creating a demand for truckers to transport dairy products and other agricultural products. The state also has an important lumber industry and leads the nation in the production of paper, creating a demand for truckers to transport logs, lumber, and paper products. Besides paper production, Wisconsin’s industrial sector includes beer brewing, commercial food processing, and the production of machinery. Truckers transport raw materials to these industries and then transport their finished products.
Major trucking routes include Interstates 39, 90, and 94; U.S. Routes 41 and 51; and State Highway 29.
To legally drive commercial motor vehicles (CMVs), you must obtain a Commercial Driver’s License (CDL). To do this, you must meet a series of requirements, which include passing a physical examination, passing the official General Knowledge test on commercial driving theory, and passing the official skills test on safe operation of a CMV.
To be allowed to drive combination vehicles, you must also pass the official Combination Vehicles knowledge test on the theory of operating combination vehicles. You’ve probably started studying the official Wisconsin Commercial Driver’s License Manual (Wisconsin CDL Handbook 2025), especially Chapter 6 on combination vehicles. This manual does contain all the information on which you’ll be tested. However, many aspiring drivers have found it difficult to absorb and retain much of the information in this study guide. If you’re having the same problem, we have some additional study tools to offer you that may help.
For instance, this free Wisconsin CDL Combination practice test, one of several we offer, will test your understanding of some of the information on combination vehicles presented in the official CDL manual. And it’s up to date as of January 2025. The 25 multiple-choice questions and answers on this practice test will assess your understanding of such topics as combination braking systems, combination driving techniques, coupling and uncoupling, and pre-trip inspections. Unlike the official knowledge test, however, this practice test comes with an automated assistant that can give you various kinds of help, including hints of the correct answer and an explanation of the correct answer. Plus, there’s no time limit. Take all the time you need to learn the material. While you’re taking the practice test, pause the test to look up the answer to a puzzling question in the CDL manual if you wish.
- 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 WI 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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