OHIO CDL COMBINATION PRACTICE TEST
11.
When driving trucks with trailers, drivers should:
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avoid making sudden movements with the steering wheel.
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make quick lane changes.
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push the brake pedal to the floor when braking.
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12.
To be in the proper position for coupling, the fifth wheel should:
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tilted up towards the rear of the tractor.
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have its jaws closed around the shank of the kingpin.
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be tilted down towards the rear of the tractor.
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13.
You are coupling a semi-trailer to your tractor but have not yet backed under. The trailer is at the right height when:
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it will be raised slightly when the tractor is backed under it.
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the locking jaws are around the head of the kingpin.
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the end of the kingpin is even with the top of the fifth wheel.
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14.
Which of the following is not a reason for covering cargo?
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To protect the cargo from weather
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To prevent other drivers from looking at the cargo
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To protect people from spilled cargo
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15.
If you have convex mirrors, be aware that:
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everything appears smaller in a convex mirror than it would if you were looking at it directly.
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objects seem closer than they really are.
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in a convex mirror objects appears larger than they really are.
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16.
Blocking _______________ to keep it from sliding.
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is used in the front, back, and/or sides of a piece of cargo
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goes from the upper part of the cargo to the floor
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is used only in the back of a piece of cargo
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17.
Never
drive with landing gear only part way up. Why?
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It must be exactly 5 feet off the ground.
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It may catch on railroad tracks.
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It may be harder to use.
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18.
When a vehicle goes around a corner, the rear wheels:
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follow the same path as the front wheels.
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follow a different path than the front wheels.
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will turn freely.
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19.
If you try to couple when the trailer is too low:
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the tractor could roll away.
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it might not couple correctly.
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the tractor may strike and damage the trailer nose.
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20.
If there is a cargo fire in a van or box trailer, you should:
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enlist the help of bystanders.
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keep the doors shut.
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open the doors, especially if your cargo contains hazardous materials.
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