Cathy Burnham Martin said this quote

Skip the urge to respond to a road rage invitation. I find that my days are far more smooth and pleasant when I don’t give someone the leverage to annoy or stress me. Just smile, giggle to yourself, or wave “hi” with a wag of your pinky finger, if you must. But then the incident is over, and no stress or annoyance remains, at least not in my car. The self-centered driver has the negative attitude. Don’t let someone else’s poor behavior choices become contagious.