PENNSYLVANIA CDL PRACTICE TEST - GENERAL KNOWLEDGE
21.
When driving on packed snow, you should reduce speed by:
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one-third.
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25%.
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10%.
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a half.
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22.
If a tire fails while you are driving, you should:
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call your supervisor for instructions.
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stop on the roadway if possible.
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brake as hard as possible.
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stay off the brake
until your vehicle has slowed down.
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23.
Empty trucks require greater stopping distances. True or False?
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False.
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True, but only on wet surfaces.
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False, but only for trucks built on or after March 1, 1998.
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True.
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24.
Pre-trip inspections are:
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required only for trips of more than 50 miles.
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required by law
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recommended.
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required only for trips of more than 100 miles.
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25.
Which of the following statements about stopping distance is true?
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Reaction distance is the distance you will continue to travel, in ideal conditions, before you hit the brakes.
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Braking distance is the distance your vehicle will travel, in ideal conditions, while you are braking.
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Perception distance is the distance your vehicle travels, in ideal conditions, from the time your eyes see a hazard until your brain recognizes it.
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All of the above.
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26.
If you are feeling drowsy behind the wheel, the only safe cure is to:
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drink a cup of coffee.
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pull off the road and get some sleep.
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drink energy drinks.
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open your windows, allowing fresh air inside your vehicle.
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27.
Before entering a curve, you should:
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maintain your speed.
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downshift.
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put the gearshift in Neutral (or "Park", if automatic).
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upshift.
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28.
To use road speed to know when to switch gears you should:
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use the posted speed limit as a guide.
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learn what speeds each gear is good for.
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watch your tachometer, and shift up when your engine reaches the top of the range.
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learn the operating rpm range of your vehicle.
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29.
When is it safe to remove the radiator cap?
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It is always safe.
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Whenever coolant has to be added to the system.
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When you can touch the radiator cap with your bare hand.
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As soon as you've stopped, as long as the engine is not hot.
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30.
Brakes out of adjustment can cause the other brakes to:
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apply more braking power.
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last longer.
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work better.
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overheat and fade.
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