CDL GENERAL KNOWLEDGE TEST (NE) - PRACTICE TEST
21.
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 have better traction.
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A high center of gravity means you are less likely to tip over.
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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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All of the above.
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22.
Your driver license doesn't have the hazardous materials endorsement. You can drive a vehicle that carries hazardous materials if:
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the vehicle does not require placards.
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one of your passengers has the hazardous materials endorsement.
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you are transporting hazardous materials for less than 50 miles.
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All of the above.
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23.
To prevent drowsiness you should:
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keep the cab warm.
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drive with a passenger.
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eat frequently.
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drive at night.
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24.
When driving at night you should:
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use your high beams when it is safe and legal to do so.
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keep the interior light on.
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always use low beams.
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All of the above.
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25.
Which of the following is a common cause of fire?
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Improperly sealed cargo.
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Under-inflated tires and duals that touch.
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Short circuits due to loose connections.
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All of the above.
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26.
With a dual air brake system:
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one system is the main braking system while the other is a back-up system.
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each system shares the same lines and hoses.
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each system has its own air tanks, hoses and lines.
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each system shares air tanks.
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27.
If your vehicle is hydroplaning, you should:
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accelerate to get through the water as quickly as possible.
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use the brakes to slow down.
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release the accelerator and push in the clutch.
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None of the above.
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28.
The minimum tire tread depth for front tires is:
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4/32 inch
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2/32 inch
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4/16 inch
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8/32 inch
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29.
Fatigue:
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increases the chance of an accident.
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does not impair vision and judgment.
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has little or no effect on driving.
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can easily be prevented by drinking coffee.
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30.
One way to prevent hydroplaning is to:
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have less than 4/32 inch tread depth in every major groove on front tires.
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use the controlled braking method.
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make sure you have enough tread on your tires.
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take curves at higher speeds.
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