I will say that's it not wise to do so while carrying a gun.
I question anyone that carries a gun that gets road rage, and actualky considers getting into an accident with the other driver.
I taught my daughters from the time they could even think of driving that WE DON'T EVER flip any other driver off. No matter what they do, we cannot possibly know what they may be capable of if pissed off.
The other driver might have nothing to live for, just left the murder scene, off of their meds, a cop, etc. etc. etc.