CDL PRACTICE TEST - GENERAL KNOWLEDGE (OKLAHOMA)
21.
When you see a hazard that will require slowing down, you should:
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warn the drivers behind by flashing your brake lights.
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immediately come to a compolete stop.
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alert the drivers behind by pointing and sounding your horn.
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22.
Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
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for one stop
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several times
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for one day
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23.
Drivers should not assume that the heights posted at bridges and overpasses are correct. Why?
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Packed snow or repaving may have reduced the clearances since the heights were posted.
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Some roads can cause a vehicle to tilt.
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The weight of a cargo van changes its height.
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24.
The distance you will continue to travel, in ideal conditions, before you physically hit the brakes in response to a hazard ahead is called:
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Reaction distance
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Braking distance
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Perception distance
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25.
A driver distraction is anything that takes your attention away from driving, such as:
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adjusting the radio.
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pedestrians.
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All of the above.
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26.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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you need to shift up.
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one of the tires has gone flat.
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the brakes have failed.
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27.
If a load is placed on one side of the trailer:
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the steering axle weight will be too light to steer safely.
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making turns may be easier.
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a rollover is more likely.
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28.
Serious traffic violations include:
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driving a CMV without obtaining a CDL.
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erratic lane changes.
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All of the above.
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29.
Right after it starts to rain, the road is very slippery. Why?
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Because black ice may form on the road.
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Because the water mixes with oil left on the road by vehicles.
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Because rain is very slippery.
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30.
You should always be able to stop within:
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the distance you can see ahead.
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100 feet.
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50 feet.
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