CDL PRACTICE TEST (OR) - GENERAL KNOWLEDGE TEST
31.
________ is the distance your vehicle will travel, in ideal conditions, while you are braking.
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Reaction distance
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Stopping distance
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Braking distance
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Perception distance
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32.
If the engine catches fire, you should:
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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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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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33.
The tractor protection valve:
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prevents the trailer from being accidentally released.
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keeps air from going out if the air compressor develops a leak.
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keeps air in the brake system should the trailer develop a bad leak.
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keeps your wheels from locking up when you brake hard.
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34.
If there is a fire in your vehicle, do NOT:
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park in an open area.
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pull into a service station.
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park away from buildings and other vehicles.
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notify emergency services.
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35.
Why should you check your mirrors regularly to know where other vehicles are around you?
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To better assess your own speed.
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To flash the brake lights if you are being tailgated.
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To move out of their way if they want to get past.
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To know whether you can make a quick lane change in an emergency.
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36.
In the event of brake failure you should NOT:
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use the parking brake.
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downshift.
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pump the brakes.
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shift up.
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37.
A red triangle with an orange center means:
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Liquid tanker
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The vehicle is hauling hazardous materials
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Slow-moving vehicle
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Law enforcement vehicle
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38.
You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
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If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
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Keep moving at the present speed and steer very gently back onto the pavement.
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Brake hard to slow the vehicle, then steer sharply onto the pavement.
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None of the above.
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39.
If you triple the speed from 20 to 60 mph the impact and braking distance is:
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9 times greater.
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12 times greater.
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6 times greater.
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3 times greater.
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40.
Front-end header boards:
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protect drivers from spilled cargo.
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protect drivers from cargo in case of an accident or emergency stop.
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should never be used.
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reduce traction.
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