The Rudest Drivers In The U.S.

"Other cities that topped the list for rude drivers were New York, Boston, Los Angeles and Washington, D.C."

"The most courteous drivers can be found in Portland, Ore., Pittsburgh, the Seattle-Tacoma area, St. Louis and Dallas-Fort Worth. Portland drivers were the least likely to see other motorists tailgating on the roadways and St. Louis motorists were the least likely to swear at another driver."

"Among the problems for Miami drivers was a convergence of two cultures on the road - retirees out for leisurely drives and young professionals on their way to work, said Todd Smith of AutoVantage, the organization that conducted the survey."

"'That demographic combination makes for higher road rage and has contributed to Miami's No. 1 ranking,' Smith said."