Officer Killed Over Parking Spot in Baltimore: Another Victim of Road Rage?

(CBS/AP) Road rage is no joke.

Up to 56 percent of fatal crashes involve aggressive driving, according to the AAA Foundation for Traffic Safety. And sometimes road rage turns deadly - as apparently was the case last Saturday in Baltimore. 

PICTURES: Road Rage - 9 Ways to Stay Safe

Police there say Brian Stevensen, an off-duty Baltimore police detective, got into an argument with another man over a parking space. The argument ended when the man, Sian James, allegedly struck Stevensen on the head with a chunk of concrete, killing him.

It's hard to believe that someone would take someone's life over something as trivial as a dispute over a parking space. But that's what road rage is all about

How can you avoid becoming a victim of road rage? With the help of AAA, CBS News has come up with a list of things NOT to do: