NH CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
Weight that is loaded so there is a high center of gravity:
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reduces the chance that the load will shift to the side or fall off.
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makes a vehicle easier to handle.
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causes greater chance of rollover.
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All of the above.
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12.
If an item placed on a flatbed trailer is 7 feet long, it should have __ tie-downs.
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1
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7
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3
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2
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13.
If a load is 50 feet long, the minimum number of tie-downs required is:
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10
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5
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3
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4
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14.
Which of these describes the proper braking technique when driving on a long and steep downgrade?
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Release the brakes until your speed is 5 mph above your safe speed, then apply the brakes. When your speed has decreased to your safe speed, repeat the previous steps.
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Apply the brakes. When your speed has been reduced to 5 mph below your safe speed, release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
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Apply the brakes until your speed has been reduced to 5 mph, then release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
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All of the above.
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15.
On any upgrade, gravity:
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doesn't affect your speed.
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slows you down.
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speed you up.
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doubles your speed.
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16.
If the safety relief valve in the air brake system releases air:
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something is wrong.
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this will supply more power to the brakes.
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this will supply more power to the drive wheels.
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the valve is fully operational.
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17.
If a load is placed on one side of the trailer:
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making turns may be easier.
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a rollover is more likely.
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the steering axle weight will be too light to steer safely.
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your brakes won't work.
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18.
Retarders:
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improve gas mileage.
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reduce braking distance.
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help slow a vehicle, reducing the need for using brakes.
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reduce the danger of slipping.
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19.
If your vehicle has air brakes, to check that air flows to all trailers:
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pull gently on the trailer with the tractor.
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go to the rear of the second trailer and open the emergency line shut-off.
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watch each trailer’s air gauge for a drop of 25 psi.
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check that the fifth wheel is not so far forward that the tractor frame will hit the landing gear.
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20.
When traveling with cargo, inspect the securement of the cargo:
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only if the inspection report listed any problems that could cause a breakdown.
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within the first 150 miles of a trip and then every 50 miles or every three hours.
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within the first 50 miles of a trip and then every 150 miles or every three hours.
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None of the above.
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