Sorry, Pete, I was not following what you were talking about (not that you weren't clear - my bad). Yes, there are all too many morons driving too slowly in the fast lane when there is plenty of space to move over further to the right. And flashing head lights works with probably around only half of them, maybe less.
But, just like the Asian examples, that "has nothing to do with the issue at hand. Those traffic problems are caused by disorganized and unlawful (in our terms) operation."
The issue at hand is whether bike lanes would significantly alleviate the impact of cyclists on faster traffic or not. That too also depends on organized and lawful operation, and would not work, for example, if cyclists eschewed the bike lanes and rode their bikes unlawfully in the fast lanes.