CDL PRACTICE TEST - GENERAL KNOWLEDGE (MARYLAND)
21.
When switching gears, if you remain too long in Neutral:
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you may have difficulty putting the vehicle into the next gear.
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the brakes won't work.
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the vehicle will speed up.
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the ABS won't work.
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22.
To release the parking brakes:
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pump the brake pedal 3 times.
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push the parking brake control knob in.
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place the parking brake control knob in Neutral.
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pull the parking brake control knob out.
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23.
Which of the following statements about backing is NOT true?
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You should use a helper when you can.
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You should use the lowest reverse gear.
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Backing toward the left side is very dangerous because you can't see as well.
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You should get out of the vehicle and check your path if you are unsure.
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24.
Federal, State, and local regulations concerning commercial vehicle weight, securing cargo, and covering loads vary widely. You should obey:
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Local regulations
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State regulations
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Federal regulations
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All of the above.
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25.
An anti-lock braking system (ABS):
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should help you steer around an obstacle while braking.
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helps you avoid wheel lock up.
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helps you avoid skids caused by over braking.
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All of the above.
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26.
When you double your speed from 20 to 40 mph, the braking distance:
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doubles.
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stays about the same.
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increases slightly.
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is 4 times longer.
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27.
To back-up safely, you should:
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use mirrors on both sides.
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start in the proper position.
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look at your path.
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All of the above.
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28.
The height of a vehicle's center of gravity is important for safe handling. Why?
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Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
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Trucks with a high center of gravity have better traction.
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A high center of gravity means you are less likely to tip over.
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All of the above.
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29.
Doing a vehicle inspection is very important. Why?
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Not doing it could cost time and dollars, or even worse, an accident.
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Federal and state regulations require that drivers inspect their vehicle.
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A defect found during an inspection could save you problems later.
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All of the above.
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30.
When you use mirrors while driving on the road, you should:
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focus on the mirrors for a long time.
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only use one mirror.
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never look back and forth between the mirrors and the road ahead.
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check quickly.
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