I like the idea of #1. But it seems from my experience in the U.S. and Canada, that there is a tendency towards unambiguous right-of-way. That tends to rule o

I like the idea of #1. But it seems from my experience in the U.S. and Canada, that there is a tendency towards unambiguous right-of-way. That tends to rule out collaborative scenarios where there's no clear "winner" when two cars are competing for the same resource. Which is a shame, because making this collaborative is exactly what will change the mentality (i.e. you can't ignore the drivers trying to merge, because you're trying to merge too). Even with zipper merging the right-of-way is going to be on the person who is staying in their own lane. I'm not sure if my experience is regional, or even imagined, nor do I know the reason...I'd imagine it makes assigning blame in an accident much easier, but that's a really crappy basis for traffic rules.