OH CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
21.
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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follow the vehicle in front of you.
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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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22.
Hydroplaning:
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can occur at speeds as low as 30 mph.
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can occur only if there is a lot of water on the road.
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is less likely if tire pressure is low.
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23.
What is the minimum tread depth for front tires?
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1/32 inch
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4/32 inch
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1/2 inch
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24.
If your brakes fail while you are driving on a downgrade, you should:
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take the least hazardous escape route you can.
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use an escape ramp if it's available.
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All of the above.
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25.
The center of gravity of a trailer should be:
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as high as possible.
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as low as possible.
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at the rear of the trailer.
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26.
When checking the condition of the steering system, you must:
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grab the steering mechanism to test for looseness.
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Visually inspect the steering mechanism.
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Check the windshield wiper arms.
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27.
To avoid becoming distracted while driving, you should:
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pre-program your favorite radio stations.
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be careful when reading a text message on your mobiledevice while driving.
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familiarize yourself with your vehicle's features within the first 10 miles of driving.
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28.
When loading cargo, keep the load:
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balanced in the cargo area.
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to the rear.
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to the front.
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29.
What is the minimum number of tie-downs for a 20 foot load?
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1
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2
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3
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30.
If your truck has automatic transmission, you should downshift:
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after entering a curve.
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whenever road conditions allow.
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when going down grades.
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