NJ CDL PRACTICE TEST - GENERAL KNOWLEDGE
21.
Which of the following is NOT another name for convex mirrors?
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Spot mirrors
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Bug-eye mirrors
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Flat mirrors
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Fisheye mirrors
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22.
If you triple the speed from 20 to 60 mph the impact and braking distance is:
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3 times greater.
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9 times greater.
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6 times greater.
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12 times greater.
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23.
What is an "escape ramp"?
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A road shoulder made to support the weight of large vehicles and, therefore, offer an escape route.
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A ramp built on steep mountain downgrades, made to stop runaway vehicles safely.
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A short section of road by which traffic may leave a controlled access highway.
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None of the above.
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24.
If your cargo only fills one-third of the length of your trailer, make sure your cargo is:
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centered and spread out as much as possible.
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piled up high with heavy cargo on top.
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loaded so there is a high center of gravity.
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to one side and as close to the ground as possible.
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25.
What are some advantages of going right instead of left around an obstacle?
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Someone may be passing to the left.
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There may be a shoulder that you can steer into.
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You can avoid a head-on collision.
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All of the above.
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26.
Black ice is:
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a thin layer of ice clear enough that you can see the road underneath it.
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rain and snow mixed.
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wet ice.
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dirty snow.
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27.
When approaching a traffic light that has been green for a long time, you should:
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maintain your current speed.
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start slowing down and be ready to stop.
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speed up to get through the light.
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None of the above.
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28.
When driving a modern truck, the gear you should be in before starting down a hill is usually_____ the gear required to climb the same hill.
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higher than
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lower than
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the same as
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None of the above.
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29.
When driving in very hot weather, the heat will increase the chances of:
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tire failure.
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ABS malfunction.
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suspension system defects.
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loss of hydraulic pressure.
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30.
Service lines are often coded with the color ____ to keep from getting them mixed up with the emergency line.
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orange
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red
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yellow
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blue
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