How do you know if you’re prone to angry driving?  A new study suggests there’s one way for you to know.  The next time you’re walking toward your car, just step around back and take a look.  If you see bumper stickers – any kind of bumper stickers – then you’re probably a driver who drives angry.

As scientists led by Lucy Troup and her student William Szlemko of Colorado State University report in the June issue of the Journal of Applied Social Psychology, it’s a simple matter of territoriality. Researchers have long known that drivers who have a strong sense of personal space while in their vehicle are more likely to be road-ragers, and the more someone plasters his vehicle with bumper stickers and decals the more territorial he feels about the space inside.

It makes sense.  If you put a lot of stickers on your car, then you see your car as a vehicle for personal expression, which means you may be more likely to drive like you feel, and feel like you drive.  Dangerous.    

And the wording of bumper tickers was irrelevant. Someone who plasters his car with religious stickers such as “1 Cross + 3 Nails = 4 Given” is just as likely to go crazy if you pass him as the guy with “I Support the Right to Arm Bears.”

Humans are real weirdos.  So come clean: What bumper stickers are on your cars?  Let’s see how well we know each other here.