Some black-and-white highway signs are regulatory. What are the other black-and-white signs used as?
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A.
Route markers Correct
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B.
Construction advisories
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C.
Parks and recreation
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D.
Warning signs
The answer is "Route markers"
Non-regulatory black-and-white signs are used as route markers. Warning signs tempt drivers who recall pairing black text with yellow caution boards and drop the yellow when asked about a black-and-white pair.
The traps in the wrong answers
B. Construction advisories
Construction advisories are orange, not black and white. This answer assigns the wrong color family to construction and maintenance signage.
C. Parks and recreation
Parks and recreation signs are brown, not black and white. This answer pulls parks and recreation out of the brown-sign rule into a black-and-white slot.
D. Warning signs
Warning signs use yellow, not plain black and white. This answer recalls black lettering on warning boards and drops the yellow background from memory.
This question tests your knowledge of Guide Signs in Illinois. Source: Illinois Rules of the Road, "Colors of Signs," p.64..
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