MISSISSIPPI CDL DOUBLES TRIPLES PRACTICE TEST
11.
Which of the the following statements about fatigue is true?
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Fatigue may cause you to not see and react to hazards.
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Fatigued driving is one of the leading causes of accidents.
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Fatigue impairs your vision and judgment.
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All of the above.
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12.
If an aggressive driver is involved in an accident down the road, you should:
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stop a safe distance from the accident scene, wait for the police and report the behavior you witnessed.
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confront the aggressive driver.
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make eye contact with the driver.
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try to get their vehicle to the side of the road.
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13.
When parked on the side of the road, you should:
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use the 4-way emergency flashers.
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flash your brake lights.
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activate the right turn signal.
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turn off all lights.
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14.
The tractor protection valve:
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keeps your wheels from locking up when you brake hard.
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keeps air from going out if the air compressor develops a leak.
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prevents the trailer from being accidentally released.
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keeps air in the brake system should the trailer develop a bad leak.
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15.
When going down grades, you should:
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downshift to a lower gear.
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rely solely on engine braking to reduce your speed.
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put the transmission in Neutral.
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shift up.
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16.
If the drive wheels begin to spin, you should:
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wait 4-5 seconds before applying the accelerator.
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accelerate smoothly and change gears as necessary.
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take your foot off the accelerator.
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apply your brakes all the way.
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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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keep the vehicle in third gear.
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drive on the shoulder.
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drive in the right lane.
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18.
Air pressure should build up in a single air system, within about:
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3 minutes.
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1 minute.
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10 minutes.
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15 minutes.
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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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drive alone whenever possible.
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close the vent.
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keep the cab warm.
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20.
During a trip you need to inspect the cargo and its securing devices:
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every 3 hours or 150 miles.
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after every break you take.
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within the first 50 miles after beginning a trip.
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All of the above.
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