There’s a “stop except right turn” sign right near my house. My wife has had people honk at her for stopping before. She points at the stop sign.
There’s a place near Trafford where you are better off putting on your left blinker to tell people you are not turning right. “Everyone” turns right and people will pull out in front of you!
We got one of those near Greensburg (University of Pittsbugh Campus) as well. I've got to wonder who designs those things. I really think a simple all way stop sign would be better.