CDL GENERAL KNOWLEDGE TEST (WEST VIRGINIA) - PRACTICE TEST
21.
When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
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the road hasn't started to ice up yet.
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the pavement is dry.
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ice has formed on the road.
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there is no ice on the road surface.
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22.
If you are feeling drowsy behind the wheel, the only safe cure is to:
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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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drink a cup of coffee.
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23.
What should you do if your brakes fail while driving downhill, and no escape ramp is available?
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take the least hazardous escape route you can - and make the move as soon as possible.
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call for assistance before you get out of your vehicle.
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use your parking brake to stop.
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wait until you can find an escape ramp.
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24.
In some states, move-over laws require drivers to:
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slow and change lanes when approaching a roadside incident.
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submit to a chemical test to determine their BAC when requested by a peace officer.
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obey the directions given by police officers at railroad crossings.
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All of the above.
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25.
To calculate how much space you should keep in front of you:
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count off the seconds until you pass a pavement marking, or some other clear landmark.
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count off the seconds until you reach the vehicle ahead.
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count off the seconds from when the vehicle ahead of you passes some clear landmark to when you reach that same landmark.
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add 4 seconds for each 10 feet of vehicle length at speeds below 40 mph.
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26.
If the ABS is not working:
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the truck will have no brakes.
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the truck will still have normal brakes.
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you should immediately reduce your speed.
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All of the above.
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27.
When more cargo is piled up in a truck, the center of gravity moves:
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higher up from the road.
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to the left side of the truck.
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closer to the ground.
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to the right side of the truck.
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28.
The _______ applies and releases the brakes when you use the brake pedal during normal driving.
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service brake system
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emergency brake system
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parking brake system
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trailer brake system
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29.
Hydroplaning is most likely to occur:
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right before it starts to rain.
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at speeds below 30 mph.
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when it's been raining for over an hour.
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right after it starts to rain.
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30.
If you must stop on or by a one-way or divided highway, you must place warning devices ___ feet, ___ feet, and ___ feet toward the approaching traffic.
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20; 200; 400
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10; 100; 200
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15; 150; 300
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5; 50; 100
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