COMBINATION TEST OREGON - PRACTICE TEST
11.
Most heavy trucks with manual transmissions require ____ to change gears.
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double clutching
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triple clutching
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single clutching
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None of the above.
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12.
Which of the following trailers can get stuck on raised crossings?
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Moving van
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Lowboy
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Car carrier
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All of the above.
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13.
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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you should lift the
trailer off the fifth-wheel.
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the end of the kingpin will be even with the top of the fifth wheel.
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the trailer will be lifted slightly when the tractor backs under it.
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14.
When you are driving on a slippery road, you should NOT:
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keep a longer following distance.
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adjust turning and braking to road conditions.
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take curves at slower speeds.
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use the engine brake or speed retarder.
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15.
Why should you cover your cargo?
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To protect the cargo from weather.
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To protect people from spilled cargo.
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Because spill protection is a safety requirement in many states.
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All of the above.
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16.
When driving at night you should:
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always use low beams.
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keep the interior light on.
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use your high beams when it is safe and legal to do so.
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All of the above.
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17.
An item that is 15 feet long placed on a flatbed trailer should have at least:
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2 tie-downs.
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3 tie-downs.
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15 tie-downs.
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1 tie-down.
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18.
Inspecting the fifth-wheel does NOT include:
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checking the area around the vehicle.
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making sure that the fifth-wheel plate is greased as required.
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ensuring the fifth wheel is in the proper position for coupling.
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checking for missing or damaged parts.
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19.
When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
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The rear trailer is twice as likely to turn over as the tractor.
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All trailers are equally likely to turn over.
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The front trailer is twice as likely to turn over as the tractor.
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None of the above.
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20.
If are being followed closely, you should:
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flash your brake lights.
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change lanes quickly.
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increase your following distance.
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decrease your following distance.
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