CDL COMBINATION PRACTICE TEST (WV)
11.
After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.
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25 miles
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two hours
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50 miles
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20 miles
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12.
Which of the following is most likely to roll over?
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The rear trailer of a double
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The front trailer of a double
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The rear trailer of a triple
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The middle trailer of a triple
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13.
A truck tractor with _________ requires the shortest stopping distance.
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Weight has no impact on stopping distance.
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a fully loaded trailer
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a lightly loaded trailer
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an empty trailer
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14.
Overloading can have negative effects on:
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braking.
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speed control.
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steering.
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All of the above.
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15.
If your vehicle is equipped with air brakes, loss of air pressure in the
emergency line causes:
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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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the trailer spring brakes to come on.
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All of the above.
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16.
Glad hands are used to:
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connect the service and emergency air lines from the truck or tractor to the trailer.
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connect the electrical lines from the truck or tractor to the trailer.
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the air compressor is connected to the engine.
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connect the brakes from the truck or tractor to the trailer.
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17.
If your truck catches fire, the first thing you should do is to:
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pull into a service station and call for help.
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get off the vehicle, open the hood and start shooting foam to keep the engine cool.
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get the vehicle off the road and park near other vehicles.
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pull off the road and park in an open area.
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18.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Braking
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Weight limits
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Steering
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Speed control
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19.
Under-loaded front axles can:
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make the steering axle weight too light to steer safely.
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cause the drive wheels to spin easily.
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cause poor traction.
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All of the above.
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20.
Which of the following is NOT TRUE? When you drive a tractor-trailer combination with ABS, you should:
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use only the braking force necessary to stop safely.
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brake the same way, regardless of whether you have ABS on the tractor, the trailer, or both.
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drive slower to keep your vehicle in a straight line.
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monitor your tractor and trailer as you slow down, and if it is safe to do so, back off the brakes to stay in control.
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