According to the manual, what are the three basic categories of road signs?
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A.
Warning, Guide, and Service
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B.
Stop, Yield, and Warning
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C.
Regulatory, Construction, and Service
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D.
Regulatory, Warning, and Guide Correct
The answer is "Regulatory, Warning, and Guide"
The manual opens its signs section by naming Regulatory, Warning, and Guide as the three basic categories that every roadside sign fits into. In B, the prominent individual sign names STOP and YIELD get mistaken for the umbrella category they belong to under Regulatory.
The traps in the wrong answers
A. Warning, Guide, and Service
Regulatory is missing here; it must appear alongside Warning and Guide in the group of three. This answer drops the least visually distinctive category because rectangular black and white signs blur together in memory.
B. Stop, Yield, and Warning
STOP and YIELD are individual regulatory signs, not entire categories; the manual's three categories are Regulatory, Warning, and Guide. This answer mistakes prominent individual sign names for the umbrella group they belong to.
C. Regulatory, Construction, and Service
Construction (work zone) and service subjects are covered under other headings; the three categories are Regulatory, Warning, and Guide. This answer elevates two familiar subtopics, construction crews and gas station icons, to full category status.
This question tests your knowledge of Road Signs in Pennsylvania. Source: Pennsylvania Driver Manual, "SIGNS," p.9..
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