CDL COMBINATION PRACTICE TEST NEVADA
11.
If your vehicle is equipped with air brakes, loss of air pressure in the
emergency line causes:
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the trailer spring brakes to come on.
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the trailer emergency brakes to come on.
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the speed of your vehicle to increase.
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All of the above.
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12.
During a walk around inspection of a combination vehicle, drivers should check that:
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the glide plate is securely mounted to the trailer frame.
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the locking jaws are around the shank.
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all locking pins are present and locked in place.
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All of the above.
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13.
When you inspect the coupling, make sure there is ______ between the upper and lower fifth wheel.
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no space
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about 1/2 inch
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enough space
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about 1 inch
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14.
Poor weight balance:
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makes it easier to turn.
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improves handling.
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can make vehicle handling more difficult.
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increases fuel efficiency.
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15.
If there is a cargo fire in a van or box trailer, you should:
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enlist the help of bystanders.
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open the doors, especially if your cargo contains hazardous materials.
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keep the doors shut.
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keep driving until you reach help.
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16.
If your vehicle catches fire, you should pull over:
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near other vehicles.
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at a service station.
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near trees.
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in an open area.
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17.
The best way to recognize that your trailer has started to skid is:
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by hearing squeaking noises from the wheels.
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by seeing it in your mirrors.
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by using retarders.
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None of the above.
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18.
Which of the following makes a rollover more likely?
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Turning too fast.
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Weight that is loaded so there is a high center of gravity.
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If the load is to one side so it makes a trailer lean.
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All of the above.
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19.
Before entering an intersection, make sure that:
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accelerate smoothly and change gears as necessary.
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That there is enough room for the rear of your vehicle to clear the stop line on your side.
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there is sufficient space to clear it.
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there's enough room to get at least halfway across.
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20.
Radial and bias-ply tires:
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should be used together only during bad weather.
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should not be used together.
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should be used together only when driving in packed snow.
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should be used together.
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