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.

Ask several people to raise their hands if they think they're above-average drivers, and most everyone will have a hand in the air. Obviously, at least half of them are wrong. In fact, given the ...

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 merging is still a tough sell for many in Washington who believe drivers moving into traffic correctly are simply cutting the line. Maybe Washington state needs to take a page from Montana to ...

You recently wondered why drivers find it relatively easy to merge from two lanes to one entering the District on I-295 north (Kenilworth Avenue), using the alternate merge approach, as opposed to the ...