The Impact of 9/11 on Road Fatalities: The Other Lives Lost to Terrorism
Cornell University - School of Applied Economics and Management
Cornell University - Samuel Curtis Johnson Graduate School of Management
Daniel H. Simon
Indiana University Bloomington - School of Public & Environmental Affairs (SPEA)
February 10, 2005
We find that driving fatalities increased significantly following the terrorist attacks of September 11, 2001, an event which prompted many travelers to substitute less-safe surface transportation for safer air transportation. After controlling for time trends, weather, road conditions, and other factors, we attribute an increase of 242 driving fatalities per month to additional road travel undertaken in response to 9/11. In total, our results suggest that at least 1,200 additional driving deaths are attributable to the effect of 9/11. We also provide evidence that is consistent with the 9/11 effect on road fatalities weakening over time as drivers return to flying. Our results show that the public response to terrorist threats can create unintended consequences that rival the attacks themselves in severity.
Number of Pages in PDF File: 20
Keywords: security, terrorism, road and air travel
JEL Classification: H56, L92, L93
Date posted: March 18, 2005
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