DECEMBER 27, 2005 - Posted at 8:10 a.m. CST
ST. LOUIS, MO - The holiday season means more traffic, and that means more chances for road rage incidents.
That's from Tara Galovski, an assistant research professor of psychology at the University of Missouri-St. Louis.
She studied the reasons why 30 percent of all drivers are aggressive behind the wheel for her book on aggressive driving.
The AAA Foundation for Traffic Safety says at least 1,500 people a year are killed or seriously injured in traffic disputes resulting from road rage.
Galovski says nine out of every ten drivers will experience at least one instance of road rage each year.