How far ahead does the manual say you should be able to identify problem situations?
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A.
5 to 8 seconds ahead
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B.
8 to 10 seconds ahead
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C.
12 to 15 seconds ahead Correct
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D.
20 to 25 seconds ahead
The answer is "12 to 15 seconds ahead"
The Looking Ahead section tells drivers to scan far enough ahead to spot trouble 12 to 15 seconds out, which the manual describes as about one city block or a quarter mile at highway speeds. Choices A and B tempt readers who confuse this identification window with the 4-second following-distance rule taught two pages earlier on page 35.
The traps in the wrong answers
A. 5 to 8 seconds ahead
This range falls short of what the manual sets for scanning ahead. This answer confuses the scanning window with the four-second following-distance rule taught in the space-management section on page 35.
B. 8 to 10 seconds ahead
The manual sets the identification window higher than this. This answer shaves the range down after carrying over the roughly ten seconds other driving guides quote.
D. 20 to 25 seconds ahead
This window runs longer than the manual asks drivers to scan. This answer stretches the identification distance well past the manual's stated window, assuming further scanning is always safer.
This question tests your knowledge of Defensive Driving in Pennsylvania. Source: Pennsylvania Driver Manual, "Looking Ahead," p.37..
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