A zipper merge is the quickest, most efficient way to move traffic in a construction zone. A 2013 study conducted in Minnesota found that it can reduce traffic backup lengths by up to 40%.

With construction season here in Michigan, zipper merging is apparent in multiple construction zones across the state. Not all work zones are set up as zipper merges. When they are, the signs ...

IDAHO FALLS, Idaho (KIFI) – As the weather warms up, Idahoans will see construction crews working ... control is if people will do what's called zipper merging," said Buffat.