Some of 'em have lower boiling points than others -- or more caffeine coursing through their fuel lines.
But there is a lot of consistency in the messages from self-described aggressive drivers who are speaking up and explaining themselves (see today's Road Worrier column; don't be alarmed by the scary old mugshot).
They describe themselves not as self-appointed traffic cops, but as remedial driver's ed teachers. And some of us have lessons to learn.
Even if you're not a honker, and even if you lack the urge to speed, you can recognize the stupid, dangerous behaviors that get them hot under the hood.
"What the media and law enforcement miss is why people like me are aggressive," writes Denise Bricker:
When I am the only driver in sight on a road with a 55 mph and someone looks my way and then pulls out in front of me so that they can drive 10 or 15 mph under the limit, it tends to irk me and I tend to honk.
When someone slams on their brakes and then turns on their turn signal, it tends to frustrate me. Since I don’t have a light up sign on the front of my truck that I can turn on to say “turn signal before brakes,” I tend to honk.
When a person in the passing lane is consistently being passed on the right I tend to come up behind them and flash my lights a couple of times. Since I can’t yell “move over”, it is the only communication I have to remind them of normal driving rules.
Does this make me an aggressive driver? According to conventional wisdom, yes.
However, when I drive, I drive. I am not talking on the phone, texting, playing with my hair or makeup, etc. I watch in front, behind and on both sides. I assume other drivers will do something stupid and I do not assume that my green light means nobody will run the red light. So I actually look before accelerating.
I have never been in an accident when I was the driver and I have no tickets.
I am pretty sure I am less of a hazard than the normal person who believes that driving is something you do while you are busy paying attention to something else.
Bruce Siceloff reports on traffic and transportation. A News & Observer reporter and editor since 1976, he took over the 
