Traffic control plans
Late Merge in Work Zones: How the Zipper Merge Is Signed and When It Is Used
The late merge, often called the zipper merge, tells drivers to use every lane up to the taper and take turns. The MUTCD 11th Edition has a section on it. Here is what that section says, the signs and messages it names, and what a traffic control company needs to know before setting one up.
Oct 10, 2026 · 6 min read
