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Massachusetts Class D Learner's Permit Exam
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Traffic Signals & Road MarkingsStandalone practice
A single solid white line separates two same-direction travel lanes. According to the Massachusetts handbook, how should you treat that line?
Blue A follows silver B in the right of two eastbound lanes. One solid white line separates the lanes. The opposite carriageway is outside the view.
Correct answer: Avoid crossing it unless needed to avoid danger.
Why
A single solid white line can separate same-direction lanes; the handbook says not to cross it unless needed to avoid danger. A white edge line may instead border a shoulder, which is not another ordinary travel lane. Double solid white has a separate no-crossing meaning.
Verified against Massachusetts Driver’s Manual · A single white boundary between lanes · p. 98
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