A new study completed by car service company AutoVantage and research firm Prince Market Research has ranked American cities based on road etiquette and aggressive behavior.
2,500 drivers in 25 major metropolitan areas who drove more than three times a week were asked how often they saw other drivers speeding, tailgating, cutting others off or slamming on their brakes. Take a look at the cities with the rudest - and the most courteous - drivers.
4. Washington, D.C.
5. Charlotte, N.C.
4. San Francisco
3. St. Louis
1. Portland, Oregon
To read more about the rudest and most courteous drivers in the U.S., click here.