In inadvertently clicked Send when I meant to click Save As Draft.  Since several people want to jump in anyway, I now attached the Rutgers report that I referenced.   

I was not ready to send the message because I am currently searching for states that require motorists to change lane to pass.  I don't know if or when I will have those data.  Who will help me find them?

The main point of my message is that requiring motorists to change lanes to pass is more definitive, enforceable and safe than 3-feet.   It's also congruous with the R4-11 Bicycles May Use Full Lane sign.  As I say in point #6, we know which lane we're in even if we can't judge 3-feet or 4-feet.  There's a line to show us.

I anticipate that whether we advocate for 3-feet, 4-feet or changing lanes to pass, all of those involve crossing the center line and we will have to be prepared to address that issue.  The attached report cites some states that modified their center lane law.  Now, who wants to dig that out and summarize it?

Frank