Mayor Paul TenHaken is begging Sioux Falls drivers to use zipper merging as road construction continues around the city, and he's offering a chance to win a truly groan-worthy shirt in the process.
Zipper merging reduces backups by up to 50% during lane closures statewide. The method uses both lanes fully and merges vehicles alternately at lane ends. WSDOT urges drivers to plan, maintain speed ...
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