COMBINATION TEST KENTUCKY - PRACTICE TEST
11.
Most truck driver deaths in crashes result from:
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following too closely.
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off-tracking.
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truck rollovers.
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driving side-by-side with another truck.
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12.
When you get ready to back under the semi-trailer, you should:
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line up about 15 degrees off the line of the trailer.
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line up directly in front of the trailer.
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back under the trailer at an angle to avoid pushing the trailer sideways.
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line up the kingpin to engage the driver's side locking jaw first.
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13.
When driving on slippery roads, you should NOT:
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go slowly.
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watch far enough ahead to keep a steady speed.
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try to anticipate stops early.
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use the engine brake.
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14.
As part of your vehicle inspection, you are checking that air flows to all trailers. After using the trailer handbrake to provide air to the service line, you go to the rear of the rig. When you open the emergency line shut-off valve at the rear of the last trailer, you should hear:
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the service line valve close.
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air escaping from the open valve.
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a mechanical vibration.
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a thumping sound.
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15.
What is the proper following distance for a 40 foot truck traveling at 35 mph?
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5 seconds
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12 seconds
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10 seconds
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4 seconds
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16.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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the parking brake should never used to slow the vehicle.
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shifting into neutral may help slow the vehicle.
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All of the above.
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17.
If ABS is not working:
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you will still have brakes.
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you will not have any brakes.
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you should use the emergency brake.
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you should use the parking brake.
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18.
Combination vehicles _________ than single CMVs.
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are safer in bad weather
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require more driving skill
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are much easier to drive
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All of the above.
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19.
The best way to recognize that your trailer has started to skid is:
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by seeing it in your mirrors.
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by opening the window and feeling the front of the mirror.
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by feeling the brakes come on.
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by recognizing tire failure.
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20.
The front trailer supports are up, and the trailer is resting on the tractor. Make sure:
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the electrical and air connections are properly connected between the tractor and the trailer.
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there is enough clearance between the rear of the tractor frame and the landing gear.
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there is enough clearance between the top of the tractor tires and the nose of the trailer.
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All of the above.
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