I have noted license numbers and called them in to the police non-emergency number several times. On one, a deputy called me back and told me the truck that buzzed me belonged to a woman but was probably driven by the man she had a restraining order against. This guy did little right and had a long history with the police. Since I didn't note whether the driver was male or female, the police couldn't take action on my call, but it would get mentioned next time when (not if!) they talked to him.

Another time I was buzzed by a truck, obviously quite intentionally. Called it in. He got a visit soon after from a deputy.

I do this so there is a record of the incident. If that driver comes before the legal system again in a bicycle incident, perhaps this will serve to show that it is not an isolated incident.

Ben