Ok back to reality for a second, ladies and gents...what makes you think speed limits for bikes, or anything else for that matter, will be any more enforced, or enforcable, than the current posted speed limits on the roadways? How about addressing the root cause - inability/unwillingness to enforce the laws we have before trying to create new laws and new paradigms.
__________________
"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey