A tractor-trailer ahead of you signals a right turn, but the driver first swings the vehicle to the left. What is the driver doing?
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A.
Making a lane change to the left before the turn
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B.
Setting up the wide swing a large right turn needs Correct
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C.
Warning you of a hazard blocking the right lane
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D.
Signaling that you should pass on the right side
The answer is "Setting up the wide swing a large right turn needs"
The manual explains that trucks move left first because a right turn needs a wide arc. Choice A, treating the swing as a plain left lane change, is the habit of reading a car driver's meaning onto a truck; on a truck the left swing is the setup for a right turn, and slipping up the right side puts you where the trailer is about to sweep.
The traps in the wrong answers
A. Making a lane change to the left before the turn
The turn signal shows a right turn, not a lane change; the left swing is only the setup for the arc. This answer applies car behavior, where a driver in the left position means to stay left, to a vehicle that must turn wide.
C. Warning you of a hazard blocking the right lane
The manual gives the reason for the swing as turn geometry, not a road hazard. This answer reads any unusual truck movement as a hazard warning, ignoring the trailer's need for room to turn.
D. Signaling that you should pass on the right side
The truck is opening room for its own right turn, not offering the right lane to a passing car. This answer reads the left drift as an invitation to pass, borrowing a courtesy convention the manual does not name.
This question tests your knowledge of Sharing the Road in New York. Source: New York State Driver's Manual, "Large Vehicles," p.74..
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