When does the manual tell you to avoid using cruise control?
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A.
When driving on slippery roads Correct
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B.
When passing through a highway tunnel
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C.
On dry pavement after sundown
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D.
In heavy highway traffic
The answer is "When driving on slippery roads"
In the Snow and Ice guidance the manual is direct: do not use cruise control on slippery roads. If the tires start to spin, an active cruise system keeps applying power, so the only way to regain control is to cut the power the cruise is still feeding. D catches drivers who carry over a common driving-school tip against cruise in dense traffic, a caution this manual does not attach to its ban.
The traps in the wrong answers
B. When passing through a highway tunnel
Tunnels are not the situation the rule targets. Guesses based on unrelated tunnel restrictions such as no-lane-change zones rather than the traction rule.
C. On dry pavement after sundown
Dry-pavement night driving is not the situation the cruise-control ban covers. Confuses general fatigue advice for night driving with the traction rule the manual attaches to cruise control.
D. In heavy highway traffic
Heavy traffic is not the trigger the manual names. Follows a common driving-school tip against cruise in dense traffic that this manual does not tie to the ban.
This question tests your knowledge of Defensive Driving in Pennsylvania. Source: Pennsylvania Driver Manual, "Road Conditions - Snow and Ice," p.41..
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