CDL DOUBLES PRACTICE TEST HAWAII
11.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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one of the tires has gone flat.
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the brakes have failed.
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you need to shift up.
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12.
For safety during a trip, you should:
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watch gauges for signs of trouble.
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check critical items when you stop.
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All of the above.
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13.
You should NOT use the parking brakes if:
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the brakes are cold.
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the brakes are too dry.
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the brakes are very hot.
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14.
You have two tie-downs on a 15 foot load. How many more tie-downs do you need to secure cargo and keep it from shifting or falling?
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One
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None
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Two
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15.
Dollies with ABS are required to have a malfunction lamp:
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on the rear.
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on the right side.
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on the left side.
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16.
When coupling twin trailers, the more heavily loaded semitrailer should:
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be in first position behind the tractor.
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have its brakes locked.
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be in the rear.
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17.
Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
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Rain
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The weight of a cargo
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Repaving of the road
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18.
When driving at night, you should use ________ when you can.
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emergency flashers
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high beams
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low beams
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19.
If an item placed on a flatbed trailer is 7 feet long, it should have __ tie-downs.
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2
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1
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7
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20.
When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:
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the rear trailer of a triple.
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rearward amplification.
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strong wind.
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