Michigan officials urge 'zipper merging' in construction zones. Here's how it works

Michigan transportation officials and state police are urging drivers to embrace the zipper merge technique as summer construction season coincides with peak travel periods. The Michigan Department of Transportation (MDOT) and Michigan State Police emphasize that proper zipper merging - where drivers use both lanes until the merge point and then alternate into the open lane - can help prevent traffic backups in construction zones.