You are caught in dense fog and can no longer see the road ahead. What does the manual tell you to do?
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A.
Slow down and continue driving with your high beams on to see farther ahead.
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B.
Stop in your travel lane and turn on your hazard lights until the fog lifts.
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C.
Follow closely behind the taillights of the vehicle in front of you.
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D.
Pull completely off the road, preferably into a parking lot, and wait for the fog to clear. Correct
The answer is "Pull completely off the road, preferably into a parking lot, and wait for the fog to clear."
The manual tells you to pull completely off the road, preferably into a parking lot, and wait for the fog to clear; keep your hazards on while parked. Choice A is the trap most drivers reach for: the everyday habit of switching to high beams whenever you cannot see, which the manual warns bounces light back off the fog and worsens the glare.
The traps in the wrong answers
A. Slow down and continue driving with your high beams on to see farther ahead.
High beams reflect off the fog and worsen visibility, so the manual bars them here. Comes from the everyday habit of switching to brights on a dark rural road.
B. Stop in your travel lane and turn on your hazard lights until the fog lifts.
Stopping in a live lane invites a rear-end crash; the manual insists on getting off the road first. Seizes on the hazard-light step and drops the pull-off step in front of it.
C. Follow closely behind the taillights of the vehicle in front of you.
Tailgating in fog is exactly how chain-reaction crashes start and is not what the manual advises. Repeats the folk trick of using another driver's lights as a guide.
This question tests your knowledge of Adverse Conditions in Pennsylvania. Source: Pennsylvania Driver Manual, "Visibility Conditions," p.42..
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