What does a diamond-shaped sign convey to drivers?
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A.
The direction to a nearby park
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B.
A prohibition that must be obeyed
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C.
A route number for a state highway
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D.
A hazard on or near the roadway Correct
The answer is "A hazard on or near the roadway"
A diamond-shaped sign warns about hazards or possible hazards on or near the roadway. Choice B catches drivers who picture the diamond painted on a carpool lane and carry that regulatory pavement marking's meaning over to the roadside sign.
The traps in the wrong answers
A. The direction to a nearby park
Parks and recreation appear on brown guide signs, not on diamond-shaped warning signs. This answer ties the diamond outline to any rural destination and skips that diamond-shaped signs warn about hazards on or near the roadway.
B. A prohibition that must be obeyed
Prohibitions are shown by regulatory signs, often red or black-and-white, not by diamond-shaped warning signs. This answer carries the carpool lane's diamond pavement marking over to the roadside diamond, though only the painted marking is regulatory.
C. A route number for a state highway
Route numbers appear on shield-shaped or rectangular guide signs, not on diamond-shaped warning signs. This answer reads any distinctive roadside outline as a highway marker and skips that diamond-shaped signs warn about hazards on or near the roadway.
This question tests your knowledge of Road Signs in Illinois. Source: Illinois Rules of the Road, "Shapes of Signs," p.63..
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