https://www.sciencedaily.com/releases/2016/07/160714091346.htm

Nearly 80 percent of drivers expressed significant anger, aggression or road rage behind the wheel at least once in the past year, according to a new study by the AAA Foundation for Traffic Safety. Findings suggest that approximately eight million US drivers engaged in extreme examples of road rage, including purposefully ramming another vehicle or getting out of the car to confront another driver.