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 ...

One would assume that since the merging lane seems empty, you can use it to pass all the stalled traffic up ahead. While it sounds like a foolproof plan, however, the merging lane is made especially ...

Traffic merges at East Holly and North Forest streets for construction in Bellingham in 2009. Most states encourage drivers to utilize the “zipper merge” and wait until reaching the cones to merge.

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 ...