I agree with "you cannot legislate common sense". People are individuals and nothing illustrates that point better then a group of them sharing the highway.

I have been a bicyclist for 35 years and have had 2 collisions with injuries and many close calls. Unfortunate, but the price one pays when enjoying their bicycle. Today, I never drive on a roadway that does not have a designated bike path and I prefer dedicated bike paths over roads.
In reference to the 3 ft. rule. I can attest to it not being obeyed by the majority of motorists. The same can be said for the law that requires a motorist to move over to the other lane when approaching a law enforcement officer involved in a vehicle stop!