COMBINATION PRACTICE TEST - ME CDL
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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Maine 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 Maine CDL Manual. Take this practice test now to prepare for the actual ME CDL combination test!
1.
Axle weight is:
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the weight transmitted to the ground by one axle or one set of axles.
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the maximum safe weight your tires can carry at a specified pressure.
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the weight of all the axles added together.
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2.
The posted speed limit:
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may only be exceeded when driving in rural areas.
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should only be exceeded when passing other vehicles.
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should never be exceeded.
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3.
When the trailer breaks away or develops a bad leak, the tractor protection valve will close automatically and:
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the tractor will lose all air pressure.
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the trailer supply valve will stay open.
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the trailer emergency brakes will come on.
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4.
When backing a tractor under a trailer:
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the fifth-wheel will come out from under the trailer.
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the trailer will be lifted slightly when the tractor backs under it.
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the end of the kingpin will be even with the top of the fifth wheel.
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5.
Emergency brakes are:
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not required on doubles.
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required on all vehicles.
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not required on buses.
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6.
Broken suspension parts can be very dangerous. When inspecting your vehicle for suspension system defects, look for:
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Broken leaves in a multi-leaf spring.
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Spring hangers that allow movement of axle from proper position.
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All of the above.
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7.
To prevent a rollover, the driver should:
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drive on the shoulder if possible.
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make quick lane changes if possible.
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drive slowly around corners, on ramps, and off ramps.
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8.
The center of gravity of a trailer should be:
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at the rear of the trailer.
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as high as possible.
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as low as possible.
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9.
Transporting hanging meat requires special attention. Why?
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Because hanging meat can be an unstable load with a high center of gravity.
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Because you have to drive fast to get it delivered fresh.
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Because refrigerated trucks have less traction.
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10.
Combination vehicles usually:
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are shorter than single than single CMVs.
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are easier to drive than single than single CMVs.
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require more driving skill than single CMVs.
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