Try driving. Blend with the traffic and go with the flow. Extend ki and be aware of what is around you. Relax and remain calm. Weight underside not just as sitting but that big automobile, too.
I find that practicing aikido while driving helps me deal with my own road rage. I usually only yell once at somebody instead of incessantly yelling at somebody.
And somedays the extend ki (positivie attitude) seems to push the negative stuff away. I feel like I am moving in a positive bubble pushing all the nuts away from me. And with the traffic like it can get down here in South Florida, well, you can only imagine how bad it gets.