I do wave when drivers are overtly courteous. Everyone who’s watching and does the right thing gets a peace sign and I say thanks out loud. It’s important to reward good behavior. Folks who blatantly aren’t get a different response and an appropriate gesture of my choosing, and I make sure they can hear me

I actually talk, shout rather, more than I might imagine. It’s made a huge difference in altering marginal behavior. Every time I holler at someone who’s not paying attention and they do what I ask I say thanks. Surprises me every time it works

I’m otherwise always trying to keep too much arm movement to a minimum. For years. In real life I’m very composed, but I’m not shy on the bike and like to leave it on the road if I can. The girlfriend freaks out a little bit when I’ve been too candid about this and that arising

I also pointedly leave extra room for cyclists when I’m driving, and I usually look in the mirror but nobody waves