Bob Mionske is an attorney specializing in the law as it relates to cyclists. He was a top level racer, twice an Olympian and a US National Champion. Mionske wrote a regular legal column VeloNews for a few years and now contributes to Bicycling Magazine. I'd say he's this country's most visible spokesman for cyclists on these matters.
Here, from his web site, is a 12-minute conversation with Mionske about legal issues for cyclists.
Once again, this interview was called to our attention by the eagle-eyed David S! Whattaguy!