PENNSYLVANIA CDL DOUBLES TRIPLES PRACTICE TEST
11.
While crossing railroad tracks, you should:
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shift up.
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shift down.
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stop, then look and listen for the train.
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not shift gears.
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12.
Exhaust system parts should NOT:
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rub against fuel system parts.
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be loose.
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rub against tires.
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All of the above.
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13.
Fully loaded rigs:
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are much more likely to roll over than empty rigs.
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are less likely to roll over than empty rigs.
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are just as likely to roll over as empty rigs.
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None of the above.
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14.
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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2 seconds; 10 feet
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3 seconds; 50 feet
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1 second; 5 feet
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1 second; 10 feet
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15.
When driving trucks with trailers, drivers should:
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make quick lane changes.
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avoid making sudden movements with the steering wheel.
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push the brake pedal to the floor when braking.
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decrease their following distance.
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16.
Overloading a vehicle with cargo can have negative effects on all of the following except:
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Steering
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Braking
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Speed control
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Weight limits
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17.
When driving in extremely hot weather, if the air pressure in the tires is too high, you should:
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stop and remain stopped until the tires cool off.
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continue driving.
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call your supervisor.
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let air out of the tires to decrease pressure.
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18.
Emergency brakes are:
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not required on commercial vehicles with air brakes.
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not required on buses.
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required on all vehicles.
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not required on doubles.
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19.
To prevent getting sleepy while driving, you should:
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keep cool by opening the window.
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keep the cab warm.
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close the vent.
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drive alone whenever possible.
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20.
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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8 seconds
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6 seconds
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5 seconds
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