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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. What is a pull up when referring to truck driving?
When a driver stops and pulls forward to get a better position.
A driving maneuver used to pull your vehicle over to the side of the road and stop.
A specific maneuver used to decelerate smoothly in the exit lane.
2. Which of these is more likely to rollover due to the "crack-the-whip" effect?
The last trailer of doubles
The last trailer of triples
The front trailer of 65 ft. conventional doubles
3. The best way to recognize that your trailer has started to skid is:
by recognizing tire failure.
by seeing it in your mirrors.
by feeling the brakes come on.
4. You are coupling a tractor to a semi-trailer and have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should hook up:
the safety chain.
the emergency and service air lines.
the electrical service cable.
5. If your vehicle thumps or vibrates heavily, it may be a sign that:
one of the tires has gone flat.
the brakes have failed.
you need to shift up.
6. After a tire has been changed, you should:
decrease tire pressure.
deflate the tire to 15 psi.
stop a short while later and check that the nuts are tight.
7. To stop a trailer skid, you should:
release the brakes to get traction back.
use the trailer hand brake to straighten out the rig.
use the brakes to slow down.
8. At speeds below 40 mph, you should leave at least one second in front of you for each ___ feet of vehicle length.
9. When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
The front trailer is twice as likely to turn over as the tractor.
The rear trailer is twice as likely to turn over as the tractor.
All trailers are equally likely to turn over.
10. If you are being tailgated, you should:
try to let the other vehicle pass.
drive on the shoulder.
speed up.
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MI 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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