Road rage incidents don't need any explanations other than the idiot getting pissed off at anything the other driver may have done
I was victim of some jackass's road rage several years ago. After exiting one X-way onto another major highway, I apparently cut some jackass off (I didn't) and he proceeded to lay on his horn while we were stopped at the next stop light.
He continued the same crap for the next two minutes then drove up along side of me flipping me the bird and motioning for me to roll down my window.
I shook my finger at him saying no then he backed of and threatened me on the other side of my car. Again, I shook my finger no then he backed off and tailgated me for the next to miles until he finally recognized my personalized license plate and backed way off..........
He followed me thru the next turn around but instead of following me completely thru it and into the gas station I was heading for, he headed off thru the adjacent strip mall and out the back.
My personalized plate indicated that I am a supporter of carrying concealed weapons and I was carrying all the while this jackass was trying to instigate a personal confrontation.........
But to readdress your comment, road ragers don't need any legitimate excuse, they are unhinged psychopaths just looking for an excuse to vent their anger and rage at anyone they deem to have dissed them on the highways...........
That's why I always carry a firearm in my vehicle.....
I always have at least 2. One carried and one within reach.