KANSAS CDL COMBINATION PRACTICE TEST
11.
Under a pressurized system, the radiator cap:
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should never be hot.
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should always be cool.
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should never be removed until the system has cooled.
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should be removed when the coolant is hot.
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12.
During a walk around inspection of a combination vehicle, drivers should check that:
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all locking pins are present and locked in place.
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the locking jaws are around the shank.
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the glide plate is securely mounted to the trailer frame.
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All of the above.
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13.
The best way to recognize that your trailer has started to skid is:
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by using retarders.
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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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None of the above.
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14.
What can cause poor traction?
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Too much weight on the steering axle.
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Overloading the truck.
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Too little weight on the driving axles.
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All of the above.
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15.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Weight limits
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Speed control
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Steering
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Braking
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16.
An item that is 15 feet long placed on a flatbed trailer should have at least:
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3 tie-downs.
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1 tie-down.
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2 tie-downs.
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15 tie-downs.
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17.
Which of the following is NOT part of checking the sliding fifth-wheel?
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Checking that it is properly greased
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Checking that the slide is not damaged or parts are missing
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Testing the tractor protection valve
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Checking that all locking pins are present and locked in place
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18.
If you are being tailgated, you should:
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drive on the shoulder.
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speed up.
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try to let the other vehicle pass.
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turn on your taillights.
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19.
To know how much space you should keep in front of you when driving at speeds below 40 mph, one good rule says you need at least ______ for each ______ of vehicle length.
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1 second; 10 feet
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2 seconds; 10 feet
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3 seconds; 50 feet
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1 second; 5 feet
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20.
The first thing to do when coupling a tractor-semitrailer is to:
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inspect the fifth wheel.
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check the trailer height.
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position the tractor.
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lock the trailer brakes.
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