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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Michigan CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Michigan CDL Manual. Take this practice test now to prepare for the actual MI CDL combination test!
1. When approaching a vehicle with a distracted driver, you should:
maintain your safe following distance.
quickly pass the vehicle.
change lanes quickly.
2. Radial and bias-ply tires:
should be used together only when driving in packed snow.
should be used together.
should not be used together.
3. When checking air brakes on combination vehicles, which of the following is NOT part of checking that air flows to all trailers?
Going to the rear of the rig.
Pulling tractor forward until the fifth-wheel comes out from under the trailer.
Using the trailer handbrake to provide air to the service line.
4. For a cargo fire in a box trailer, you should:
open the doors immediately and use the fire extinguisher.
keep the doors shut.
wait 10 minutes before opening the doors.
5. When coupling, you should:
be aware that wrong coupling and uncoupling can be very dangerous.
make sure the trailer kingpin is bent.
make sure the trailer wheels are not chocked.
6. Combination vehicles usually require _________ single commercial vehicles.
the same level of skill as
more driving skill than
less driving skill than
7. Do NOT use the parking brakes:
when you park for less than two hours.
when you leave your vehicle.
if the brakes are very hot.
8. What can cause poor traction?
Overloading the truck.
Too little weight on the driving axles.
Too much weight on the steering axle.
9. If an item placed on a flatbed trailer is 7 feet long, it should have __ tie-downs.
10. To prevent rollover, drivers of combination vehicles should:
brake while turning.
keep the cargo as close to the ground as possible.
keep the load is to one side.
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MI CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Number of questions: 20
Correct answers to pass:16
Passing score:80%
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