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.

If you're a 'polite' early merger, you're making traffic worse. 1 weather alerts 1 closings/delays. Watch Now. 1 weather alerts 1 closings/delays. Menu. Search site.

Question: I read your last article about road construction and work zones. Can you talk about the zipper merge? It seems like a lot of people don’t know what it ...

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 ...

From the editorial: "'Don't worry about being ‘Minnesota nice.’ ... It is much safer for motorists to remain in their current ...

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 ...

Read full article: SOUND OFF: New slogans on welcome signs at Florida border. ... and then move to the right side into a merge lane to pass traffic and then force their way back in,” he said.

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.