Looking to Avoid Aggressive Drivers? Check Those Bumpers. - washingtonpost.com

Shankar Vedantam - Looking to Avoid Aggressive Drivers? Check Those Bumpers. - washingtonpost.com

"Drivers of cars with bumper stickers, window decals, personalized license plates and other 'territorial markers' not only get mad when someone cuts in their lane or is slow to respond to a changed traffic light, but they are far more likely than those who do not personalize their cars to use their vehicles to express rage -- by honking, tailgating and other aggressive behavior. "

Are drivers actually visualizing pounding your face rather than world peace? I would say from my experience that bumper sticker applicants are definitely a more vocal group, but I'd stop short of territorial guardians.