VA CDL PRACTICE TEST - GENERAL KNOWLEDGE
31.
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
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100 psi
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75 psi
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50 psi
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32.
If you have to drive off the road, you should:
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brake as hard as you can to maintain control.
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fully apply the brakes until your speed has dropped to about 20 mph.
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keep one set of wheels on the pavement, if possible.
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33.
Before starting down a hill, you should slow down and shift down:
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to a speed that you can control without using the brakes hard.
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so you can coast downhill.
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to a gear that will cause your engine to exceed its redline.
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34.
ABS:
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causes your wheels to lock when you break hard.
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is not required on newer trucks.
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gives you more control when you brake.
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35.
Distracted driving can cause collisions. Which of the following can distract your attention while you are driving?
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Talking to passengers.
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Listening to music.
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All of the above.
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36.
If a worker is close to the roadway in a work zone, you should:
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pull off the road and stop.
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reduce your speed below the posted speed limit.
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drive at the posted speed limit.
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37.
Water
in the brakes can cause the brakes to:
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overheat.
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fade.
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be weak or apply unevenly.
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38.
With a dual air brake system:
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each system shares the same lines and hoses.
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each system has its own air tanks, hoses and lines.
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each system shares air tanks.
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39.
You should NOT use the parking brakes if:
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the brakes are too dry.
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the brakes are cold.
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the brakes are very hot.
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40.
To avoid becoming distracted while driving, you should:
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plan your route before you begin driving.
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adjust all vehicle controls and mirrors prior to driving.
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All of the above.
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