> Otherwise if there's a sign that says "Left Lane Closed 10 Miles Ahead" everyone will get in the right lane for ten miles.
One reason for this is that it only takes one person "policing" from the right lane (i.e. driving down the middle of the road, or worse: swerving out in front of the left lane) to shut down zipper merging.
One reason for this is that it only takes one person "policing" from the right lane (i.e. driving down the middle of the road, or worse: swerving out in front of the left lane) to shut down zipper merging.