A five-sided sign, yellow or yellow-green with black symbols, means:
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A.
Railroad crossing ahead
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B.
Yield to merging traffic
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C.
School zone or school crossing Correct
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D.
No passing zone
The answer is "School zone or school crossing"
A five-sided sign marks a school zone or school crossing. Choice D traps readers who group the two yellow roadside signs by color and skip past the difference between a pentagon and the three-sided pennant used for no passing zones.
The traps in the wrong answers
A. Railroad crossing ahead
The railroad crossing warning sign is round with a black X and the letters RR. This answer ties any yellow warning shape to the crossing sign that stands closest to it on the road.
B. Yield to merging traffic
Merging is signaled by a diamond-shaped warning sign, not a pentagon. This answer reads any five-sided shape as a variant of the three-sided yield sign.
D. No passing zone
The no passing zone sign is a three-sided pennant, not a pentagon. This answer groups two yellow roadside signs by color and misses the shape difference.
This question tests your knowledge of Road Signs in Illinois. Source: Illinois Rules of the Road, "Shapes of Signs," p.64..
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