A more commonly known sign, “Thru traffic merge left” is detailed in the official Caltrans manual as needed when a lane is being dropped at the next exit. Related Articles.

A lane is closed ahead. You move over but other cars fly by and cut in before the bottleneck. It's frustrating but experts say it helps traffic flow.

Not all work zones are conducive to zipper merging. While helpful in heavy traffic with a lot of back-ups, INDOT's website states that when traffic is flowing at highway speeds and there is ...

Second, in light traffic moving normal speeds, studies have shown that traffic flows more smoothly if drivers merge soon after seeing the “lane closed ahead” sign.

A zipper merge occurs when drivers use both lanes of traffic until reaching a merging point, where motorists then take turns ...

If you have any questions concerning traffic related laws or issues in Minnesota, please send your questions in.

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 ...

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.

With construction underway on Michigan roads, it's a certainty you'll need to merge down to one lane at some point: State officials are urging drivers to "zipper" merge, a method to navigate ...

DENVER — AAA estimates that more than 60 million people will travel by car this week. That means 60 million people have the opportunity to zipper merge. In the state of Maine, the signs are more ...

Second, in light traffic moving normal speeds, studies have shown that traffic flows more smoothly if drivers merge soon after seeing the “lane closed ahead” sign.

DENVER — AAA estimates that more than 60 million people will travel by car this week. That means 60 million people have the opportunity to zipper merge. In the state of Maine, the signs are more ...