You are on a road with solid double yellow lines down the center. When may you cross them?
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A.
To make a left turn into a private driveway. Correct
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B.
Only when directed by a police officer.
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C.
To pass a slow vehicle when the road is clear.
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D.
Never, under any condition.
The answer is "To make a left turn into a private driveway."
Double solid yellow lines may be crossed to make a left turn into an alley, private road, driveway, or street. Choice D comes from the rule of thumb 'double yellow means never cross,' a passing rule wrongly extended to turns.
The traps in the wrong answers
B. Only when directed by a police officer.
Officer direction is not the criterion; the turn allowance is written into the marking itself. This answer confuses officer authority to override signals with a standing rule already in the manual.
C. To pass a slow vehicle when the road is clear.
Double solid yellow does not permit passing, regardless of how clear the road looks. This answer uses the 'pass when it's clear' habit from broken-yellow roads and ignores the center-line color.
D. Never, under any condition.
The manual carves out an exception for left turns into or from a driveway, alley, or street. This answer applies the double-yellow passing rule across the board and skips the turn exception.
This question tests your knowledge of Road Markings in Illinois. Source: Illinois Rules of the Road, "Chapter 10: Pavement Markings, Yellow Center Lines," p.79..
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