DOUBLES TRIPLES TEST DE - CDL PRACTICE TEST
11.
The best advice for driving in fog is:
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use high beams.
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don't drive.
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drive slowly in the left lane of traffic.
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use low beams.
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12.
To know how much space you should keep in front of you when driving at speeds below 40 mph, one good rule says you need at least ______ for each ______ of vehicle length.
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1 second; 5 feet
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3 seconds; 50 feet
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1 second; 10 feet
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2 seconds; 10 feet
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13.
An alcohol evaporator:
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used to reduce the chance of the front wheels skidding.
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is used to reduce the risk of ice in air brake valves and other parts during cold weather.
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protects the air brake system from too much pressure.
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to hold compressed air.
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14.
Which of these statements about brakes is true?
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To stop, the brake shoes and linings are pushed against the outside of the drum.
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Brake fade does not result from excessive heat.
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The lighter the vehicle, the more heat the brakes absorb to stop it.
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None of the above.
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15.
A trailer jackknife is more likely to happen when the trailer is:
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overloaded.
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empty.
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loaded to its full capacity.
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None of the above.
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16.
Which of the following is not proper tie-down equipment:
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Ropes
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Chains
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Straps
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Bungee cords
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17.
ABS helps you:
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drive faster.
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stop faster.
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brake harder.
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None of the above.
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18.
When should you downshift automatic transmissions?
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When you want to go faster.
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When going down steep grades.
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Watch your tachometer, and downshift when your engine reaches the top of the range.
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When you start to get drowsy.
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19.
In a dual air brake system, if one air system is very low on pressure:
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you should drive and brake as you always have.
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either the front or rear brakes will not be operating fully.
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you should pump the brakes to restore pressure.
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the effect won't be noticeable for the first 50 miles.
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20.
Doubles and triples:
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can't be turned suddenly.
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can be stopped suddenly due to their weight.
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can be turned suddently due to the low center of gravity.
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have a lower chance of skidding.
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