DOUBLES TRIPLES TEST KY - CDL PRACTICE TEST
11.
When parking a trailer without spring brakes, it is very important for safety that you use wheel chocks. Why?
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if you don't use wheel chocks, supply air will be sent to the service line instead of going to charge the trailer air tanks.
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The air could leak out of the trailer air tank, releasing its emergency brakes.
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You may not notice a major leak in the service line until you try to put the brakes on.
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None of the above.
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12.
Glad hands are:
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electronic devices.
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warning devices.
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securement devices.
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coupling devices.
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13.
To prevent rollover, you should:
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go slowly around turns.
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keep the cargo as close to the ground as possible.
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drive slowly around on ramps and off ramps.
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All of the above.
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14.
When driving a 50-foot truck at 40 mph, your minimum following distance should be:
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4 seconds
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6 seconds
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5 seconds
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8 seconds
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15.
Combination vehicles usually require _________ single commercial vehicles.
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more driving skill than
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less driving skill than
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the same level of skill as
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None of the above.
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16.
Over-length loads:
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require special driving care.
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require special transit permits.
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may require special equipment such as "wide load" or flags.
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All of the above.
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17.
If you are carrying a heavy load that is slowing you down, you should:
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drive in the left lane.
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drive on the shoulder.
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keep the vehicle in third gear.
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drive in the right lane.
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18.
While crossing railroad tracks, you should:
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shift up.
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shift down.
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not shift gears.
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stop, then look and listen for the train.
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19.
Before each trip, you must make sure:
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your cargo obscures your view to the sides.
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the truck is overloaded.
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the cargo is balanced and secured.
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the cargo has a high center of gravity.
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20.
When more than one semitrailer is behind the tractor:
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the more heavily loaded semitrailer should be in the rear.
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the lighter trailer should be in the rear.
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the more heavily loaded trailer should be disconnected.
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The order doesn't matter.
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