Despite all the hype and public service announcements, Minnesotans STILL don't do the Zipper Merge-- and we all suffer, sitting there in traffic that's backed up. I think it's because we're too nice.
I was driving in NE Rochester the other day and noticed some angry drivers as they started to turn North after they left 48th Street NE. Honking, interesting hand signals and a lot of speeding up to cut people off were taking place. I'm pretty sure a change in signage is to blame...and if you've been driving that for a while, it isn't obvious.
I'll admit it, a year-and-a-half ago I almost didn't pass my Minnesota written driver's test! It was actually really hard, and about 40 questions long.