DURHAM (WTVD) -- NCDOT and North Carolina State researchers are studying the effectiveness of the "zipper merge." The rather unique sign was installed 2 weeks ago where NC 147 meets southbound I-85.

COLORADO, USA — Zipper merging needs better signage so badly that the Federal Highway Administration commissioned a study to determine if specific signage would get more drivers to zipper merge and ...

Zipper merges encourage drivers to use both lanes and merge at a designated point, improving traffic flow and reducing ...

A few simple tips can save you time and reduce frustration in heavy traffic and construction zones, whether during your daily commute or a summer vacation drive across Michigan. Here's a big one: Use ...

Have you seen the road sign “Right lane closed ahead, merge left,” but while you move to the left lane, other cars fly by you in the right lane? Then they duck into the left lane ahead of the cars in ...

Why are so many drivers slow to pick up and use the zipper merge? I have reported for years about the lack of general merging etiquette in the Pacific Northwest and how it contributes to our terrible ...

PERINTON, N.Y. – If you’ve ever been jammed up in traffic trying to merge, this report is for you. Experts say a method called the “zipper merge” helps traffic flow smoothly. Well, when it’s done ...

DENVER — Colorado drivers seem near universal in wanting the “zipper” to be an official logo of construction zones. Zipper merging is the concept of driving in a closing lane to the end before merging ...

My April column on the state's campaign to get drivers to use the zipper merge technique at road construction sites generated quite a bit of buzz. Since then it's been a hot topic on Twin Cities talk ...

The quickest, most efficient way to merge for a construction zone probably isn’t what you think it is. The “zipper merge,” where vehicles run in parallel until one lane physically narrows, is better ...