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 ...

The zipper merge can be an effective method to manage traffic in congested construction zones. The Michigan Department of Transportation rolls out road signs to notify drivers where it is in place ...

It’s called a “zipper merge” because it works like the teeth of a zipper, and many states are studying the idea and the best road signs to explain how drivers should do it.

Many drivers, when they see a “lane closed ahead” sign, move over right away, doing the long-established early merge.

The zipper merge can be seen as cutting in line, according to AAA. However, research shows it's more efficient because it uses more available road space for as long as possible to keep traffic moving.

The study found that three signs ahead of a zipper merge could help drivers use the preferred merging method.

Zipper merge signage from the Michigan Department of Transportation. In work zones where traffic volume is high and average speeds are slowed, the zipper merge technique is recommended to improve ...

If you ever needed to embrace the zipper merge, now is the time when driving Fort Collins' busiest road into the city from Interstate 25. Unless you prefer to wait even longer in traffic on ...

The NJ transportation department recently updated its message sign boards to include funny holiday-themed warnings against reckless driving.

Question: I read your recent article about road construction and work zones. Can you talk about the zipper merge?

How soon should I start merging when a lane is ending or closed on the freeway or road? Ask Yadi has the answer.