The manual warns that when you drive beside a large truck, the wind currents from the truck can:
-
A.
Cool your engine and reduce your fuel efficiency.
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B.
Push the truck itself into your lane if you do not brake.
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C.
Trigger your traction control on dry pavement.
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D.
Affect your steering, so give the truck plenty of room. Correct
The answer is "Affect your steering, so give the truck plenty of room."
The manual warns that wind currents thrown off by a larger vehicle may affect your steering, and it tells you to give the truck plenty of room for that reason. Choice B is what a driver reaches for when they assume the danger beside a truck is the truck itself drifting into their lane, since that is the visible worry, but the manual is calling out what the wind does to your own car, not the truck's.
The traps in the wrong answers
A. Cool your engine and reduce your fuel efficiency.
The manual attaches no fuel-economy claim to the wind-current warning. This answer confuses the drafting effect racers talk about with the safety rule the manual is teaching.
B. Push the truck itself into your lane if you do not brake.
The manual's concern is what the wind does to your car, not to the truck. This answer confuses the driver's own steering wobble, which the manual is describing, with the truck being pushed sideways.
C. Trigger your traction control on dry pavement.
The manual makes no claim about traction control activating from wind. This answer confuses a wet-road stability rule with the wind-buffet warning that applies to any pavement.
This question tests your knowledge of Lane Changes & Merging in North Carolina. Source: North Carolina Driver Handbook, "Trucks and Other Vehicles," p.91..
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