Combination Vehicles Practice Test | Wisconsin 2025 #2 Page 3 of 3
Train for FREE online with our Wisconsin CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a WI combination license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.
15 . Rollovers happen when drivers:
A rollover happens as a result of a driver taking a turn at too high a speed. Be sure to take turns and curves safely and slowly.
16 . When backing up to couple a trailer, you should position the tractor:
When backing up to couple a trailer, you should position the tractor directly in front of the trailer. Trying to couple while backing at an angle could cause the trailer to move and the landing gear to break.
17 . After finishing a pre-trip inspection, you should:
Before a trip, you should ensure that air reaches all air brakes on all trailers by opening up the rear emergency line and service line shut-off valves to listen for escaping air. Close both shut-off valves before beginning to drive.
18 . If you cannot reverse your trailer in a straight path, you should:
If you need to back your trailer but cannot back up in a straight path, you should back on a curved path toward the driver's side of the vehicle. This will allow you the best possible visibility while backing.
19 . Emergency air lines are often coded with the color:
In general, the parts of the service air line are coded blue and the parts of the emergency air line are coded red.
20 . After connecting the air lines to the trailer while coupling, you should:
Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.
See the exact questions that will be on the 2025 Wisconsin DMV exam.
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