CDL COMBINATION PRACTICE TEST HAWAII
11.
At speeds below 40 mph, you should leave at least one second in front of you for each ___ feet of vehicle length.
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5
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20
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10
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12.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should travel at the posted speed limit.
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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Reduce your speed to a crawl.
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13.
What happens when the center of gravity of a truck moves higher up from the road?
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The vehicle is more stable while turning.
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The truck becomes easier to turn over.
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It is easier it is to turn around corners.
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14.
Which of the following is NOT part of a trailer air line system?
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Glad hands
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Emergency air-line
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Kingpin
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15.
Which of these statements is true?
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Large combination vehicles take longer to stop when they are fully loaded than when they are empty.
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Trailer skids are more likely to happen when the trailer is empty or lightly loaded.
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"Bobtail" tractors can take longer to stop than a combination vehicle loaded to maximum gross weight.
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16.
When transporting cargo, the cargo should be checked:
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only before the trip.
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before the trip and after the first 150 miles.
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before the trip and after the first 50 miles.
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17.
You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
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2/32
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1/32
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4/32
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18.
The service line is also called:
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control line or signal line.
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signal line or air line.
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pressure line or signal line.
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19.
When driving a 50 foot combination vehicle at 50 mph in ideal conditions, you should keep at least ____ seconds of space in front of you.
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6
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5
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10
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20.
Most heavy vehicles require ________ change gears.
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single clutching
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double shifting
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double clutching
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