Here & Now Here & Now

Support the news

When To Merge?08:30

This article is more than 6 years old.

How do you merge? Different strategies work for different traffic conditions.

Studies suggest the zipper merge works well for slow moving, dense traffic conditions, while the early merge works well for open stretches of road.

Evan Sernoffsky and Sam Machkovech join Here & Now's Robin Young to discuss different merging strategies, and whether people will follow what the science suggests.


  • Evan Sernoffsky, staff writer for the San Francisco Chronicle. He tweets @EvanSernoffsky.
  • Sam Machkovech, technology reporter for Ars Technica. He tweets @samred.

This segment aired on September 10, 2014.

Support the news

Support the news