CDL PRACTICE TEST - GENERAL KNOWLEDGE (ALABAMA)
21.
You should check air pressure and temperature gauges:
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as often as is practical.
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at the beginning of each trip.
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every time you stop.
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at the end of each trip.
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22.
Drivers can hold a Commercial Driver’s License from how many different States?
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Three
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One
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Two
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Four
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23.
How do you test hydraulic brakes for leaks?
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Pump the brake pedal ten times and see if it holds.
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Pull forward against parking brake to make sure the hydraulic brakes holds.
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Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
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None of the above.
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24.
Which of the following is NOT a good rule for using turn signals?
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Signal continuously until you have completed the turn.
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Signal well before you turn.
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Put your turn signal on after the turn.
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Cancel your signal after you have turned.
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25.
If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
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4 seconds
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3 seconds
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2 seconds
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5 seconds
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26.
What should you do when confronted by an aggressive driver?
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Make eye contact
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Ignore gestures
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Challenge them by speeding up
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Hold-your-own in your travel lane
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27.
Which of the following statements about driving in hot weather is true?
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You should check the tire mounting and air pressure before driving.
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Spots where tar "bleeds" to the surface
provide better traction.
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If a tire is too hot to touch, you should hose it down with water.
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All of the above.
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28.
If your vehicle catches fire while you are driving, you should:
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park in an open area.
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pull into a service station.
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immediately open the van or trailer doors.
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increase your speed to put out the fire.
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29.
A high center of gravity:
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means your vehicle is more likely to tip over.
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helps the vehicle be more stable while turning.
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means you'll have better traction.
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is less dangerous in curves.
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30.
If the engine catches fire, you should:
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turn off the engine as soon as you can.
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avoid shooting foam from the vehicle's underside.
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pull into a service station and notify the emergency services.
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open the hood as soon as you can.
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