A similar thing happened to me except the guy chased me down after I flipped him the "bird" after he cut me off. It was scary, but I held my ground and told him I had the right of way and he'd better not assault me any further. He left with no further problem., lucky for me. I didn't get his license number but later I wrote a letter to the police department and explained the circumstances, since I wanted to know if I really would be backed up by them after this scary incident. I got a nice letter back from our chief of police telling me I was correct in my assumptions of the law (in my circumstance) and that the guy who chased me down was wrong. Since then, I've decided that if there is any altercation with a motorist that goes this far, I will call the police immediately. I carry a cell phone with me at all times and will not hesitate to use it to report problem motorists. Usually, I ignore horn honks and cat calls, as annoying as they are. The more we ride, the more motorists will get used to us on the roads.