You are driving through a work zone marked with a solid white line. What does the manual tell you about that line?
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A.
Do not cross it; stay in your lane Correct
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B.
Cross it only to pass slower vehicles
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C.
Cross it if the lane next to you is clear
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D.
Cross it only if your lane is ending ahead
The answer is "Do not cross it; stay in your lane"
The work-zone safety rules include a plain instruction: do not cross a solid white line in a work zone, and stay in your lane. Absent a flagger directing otherwise, that line holds even where a lane change would be legal on open highway. Drivers gravitate to C when they carry the open-highway habit of shifting lanes whenever a gap opens up, forgetting the solid line still governs inside the work zone.
The traps in the wrong answers
B. Cross it only to pass slower vehicles
Passing rules from the open highway do not apply here. This answer applies normal passing conventions the manual specifically suspends inside work zones.
C. Cross it if the lane next to you is clear
A clear neighboring lane does not lift the rule; the manual bars crossing the solid line in a work zone regardless of the gap you see. This answer carries over the open-highway habit of switching lanes whenever a gap opens up, ignoring that the solid line still holds inside a work zone.
D. Cross it only if your lane is ending ahead
A lane-ending sign tells you to merge before the closure, not to cross the solid line. This answer assumes the lane-ending sign overrides the solid-line rule the manual keeps in force.
This question tests your knowledge of Defensive Driving in Pennsylvania. Source: Pennsylvania Driver Manual, "Work Zones," p.54..
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