Last Updated
：2025/12/05
zipper merge
（ plural ）
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A convention for merging traffic into a reduced number of lanes, where drivers use both lanes to advance to the lane reduction point and merge at that location, alternating turns.
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zipper merge
Drivers practicing the zipper merge reduced delays and kept traffic moving through the construction zone.
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Drivers practicing the zipper merge reduced delays and kept traffic moving through the construction zone.
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