You approach a YIELD sign. What does it require you to do?
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A.
Slow down to a safe speed and stop if necessary. Correct
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B.
Come to a full stop before every entry.
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C.
Keep speed and merge into the flow immediately.
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D.
Sound the horn before entering the intersection.
The answer is "Slow down to a safe speed and stop if necessary."
A YIELD sign tells you to slow to a safe speed and stop only if that is what it takes to give way. Choice B is the trap, treating YIELD as a full stop; the two signs share red-and-white coloring, but YIELD lets you keep rolling when the way is clear.
The traps in the wrong answers
B. Come to a full stop before every entry.
A YIELD sign requires a stop only when needed to give way, not on every approach. This answer treats YIELD as a STOP sign because both use red-and-white regulatory coloring.
C. Keep speed and merge into the flow immediately.
YIELD requires slowing so approaching traffic and pedestrians can pass first. This answer recalls the merge rule where drivers keep moving and applies it to a YIELD.
D. Sound the horn before entering the intersection.
A YIELD sign requires giving way to traffic and pedestrians; sounding the horn isn't part of the action the sign requires. This answer assumes the sign calls for a warning to other drivers, borrowing a blind-corner habit.
This question tests your knowledge of Regulatory Signs in Illinois. Source: Illinois Rules of the Road, "Regulatory Signs, Yield," p.65..
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