RHODE ISLAND CDL PRACTICE TEST - GENERAL KNOWLEDGE
21.
If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you have?
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3 seconds
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5 seconds
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4 seconds
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22.
In vehicles with air brakes, the air compressor governor:
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controls how much air the air compressor will pump into the air storage tanks.
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controls when the air compressor will pump air into the air storage tanks.
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controls when the air storage tanks will pump air into the air compressor.
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23.
The air compressor governor:
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controls when the air storage tanks will pump air into the air compressor.
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stops the compressor from pumping air.
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allows the compressor to start pumping air when the tank pressure rises to the "cut-out" pressure.
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24.
When should you use the 4-way emergency flashers instead of flashing the brake lights to warn the drivers behind you?
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At night time.
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When you are driving very slowly or are stopped.
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When visibility is poor.
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25.
ABS:
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helps you avoid wheel lock up.
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allows the wheels to lock up.
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makes it easier to break.
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26.
Which of the following statements about drivers fixing an engine or changing a tire is true?
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They often do not pay attention to roadway traffic.
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They usually pay attention to the danger roadway traffic is to them.
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Roadway traffic is not a danger to them.
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27.
On a level surface:
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wheel chocks make it easier for the vehicle to roll.
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wheel chocks should not be used when the brakes are very hot.
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you should use wheel chocks to hold the vehicle.
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28.
Who is responsible for making sure the lights and reflectors are clean?
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The shipper
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The previous driver
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The driver
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29.
If your trailer starts to skid, you should:
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release the brakes to get traction back.
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keep the rear of your vehicle close to the curb.
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use the trailer hand brake (if you have one) to straighten out the rig.
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30.
There are two ways of knowing when to shift up:
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Weather conditions and road speed.
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Engine speed and road speed
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Automatic transmissions and shift indicator light.
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