CDL GENERAL KNOWLEDGE TEST (VT) - PRACTICE TEST
21.
Hydroplaning:
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is more likely to occur when tire tread is in good condition.
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only occurs at speeds above 55 mph.
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is more likely when tire pressure is low.
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22.
When inspecting your windshield, you should look for:
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cracks.
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dirt.
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All of the above.
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23.
Which of the following is NOT a hazard?
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An escape ramp
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A cardboard box on the road
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Work zones
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24.
Whether or not they load and secure the cargo themselves, drivers are responsible for:
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knowing the cargo does not obscure the view ahead or to the sides.
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making sure the cargo does not restrict access to emergency equipment.
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All of the above.
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25.
A low air pressure warning signal:
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is required on all vehicles without air brakes.
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is optional on vehicles with air brakes.
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is required on vehicles with air brakes.
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26.
If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
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3 seconds
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4 seconds
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2 seconds
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27.
The 2 special conditions where you should downshift are:
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While going down hill and after finishing a curve.
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Before starting up a hill and before finishing a curve.
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Before starting down a hill and before entering a curve.
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28.
To prevent drowsiness you should:
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drive with a passenger.
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eat frequently.
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keep the cab warm.
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29.
An antilock braking system (ABS):
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requires a change in the way you brake.
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in order to work, requires you to apply the brakes as hard as you can.
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None of the above:
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30.
In mountain driving, to select a safe speed you should:
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go 5 mph slower than the vehicle ahead.
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select a speed that's not too fast for the weight of your vehicle and cargo, the length and steepness of the grade, and road and weather conditions.
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follow the vehicle in front of you.
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