OHIO CDL PRACTICE TEST - GENERAL KNOWLEDGE
21.
To calculate how much space you should keep in front of you:
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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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count off the seconds until you reach the vehicle ahead.
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add 4 seconds for each 10 feet of vehicle length at speeds below 40 mph.
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22.
If you perform the skills test in a vehicle that is not equipped with air brakes:
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you will be required to operate vehicles with air brakes.
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you will be required to take the tank vehicle test.
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you will be restricted from operating vehicles with air brakes.
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23.
Another name for front-end header boards is:
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head belt.
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headache racks.
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containerized racks.
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24.
To prevent drowsiness before a trip, drivers should:
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drive alone.
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get at least 5 hours of sleep.
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prepare the route carefully, including stopping points.
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25.
To know when it's time to shift up:
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use engine speed and road speed.
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watch your tachometer, and shift up when your engine reaches the bottom of the range.
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use mirrors on both sides.
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26.
The Johnson bar is a valve that:
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is installed in the first tank the air compressor pumps air to.
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works the trailer brakes.
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reduces the braking pressure to a safe level.
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27.
When starting your vehicle, the warning lights and buzzers:
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should stay on for 15-20 seconds.
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should go out right away.
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should stay on until you manually turn them off.
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28.
When you are driving very slowly you should:
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use the 4-way emergency flashers.
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stay in the left lane.
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avoid braking.
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29.
When you are being tailgated, you should NOT:
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increase your following distance.
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turn on your taillights.
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All of the above.
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30.
Skids happen whenever:
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tires lose their grip on the road.
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the weight limit is exceeded.
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ABS is not working.
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