You're being down-voted for the tone of your post I think. But I think it's an interesting point. If there is evidence that US bikers have a culture that does not following traffic laws that can and should seriously impact policy decisions. It's possible some of the great suggestions here that work well in other cities wouldn't work in the US for this or any dozen of other reasons.

Not saying that there for is such a culture, only that it is certainly a popular complaint, and if there is truth for it we should factor that into our decisions.