So for the second year running Miami drivers have been found to be the least courteous in the country, followed by New York and Boston drivers, according to a survey by national auto club AutoVantage. The other two cities with the worst road rage were Los Angeles and Washington, D.C. Talking on cell phones, running red lights and slamming on the brakes were some of the frequent behaviors noted by commuters of their fellow drivers. The most frequent cause of road rage cited in the survey was impatient and/or speeding motorists. Drivers also cited poor driving in fast lanes, talking on the cell phone and driving while stressed, frustrated or angry. The most courteous city is Portland, OR, followed closely by Pittsburgh, Seattle/Tacoma, St. Louis and Dallas/Ft. Worth. The obvious link withÃ‚ our businessÃ‚ is that drivers’ safety habits are just one of the factors that can affect the cost of auto insurance. The cost and crashworthiness of vehicles is another.Ã‚ This survey also highlights the emerging risk posed by cell phone use whileÃ‚ driving. Check out further data from the I.I.I. on driver behavior and auto crashesÃ‚ and cell phones and driving.