NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Fuel Economy and Safety: The Influences of Vehicle Class and Driver Behavior

Mark R. Jacobsen

NBER Working Paper No. 18012
Issued in April 2012
NBER Program(s):Environment and Energy Economics

Fuel economy standards change the composition of the vehicle fleet, potentially influencing accident safety. I introduce a model of the fleet that captures risks across interactions between vehicle types while simultaneously recovering estimates of unobserved driving safety behavior. The model importantly includes the ability to consider the selection of driver types across vehicles. I apply the model to the present structure of U.S. fuel economy standards and find an adverse effect on safety: Each MPG increment to the standard results in an additional 149 fatalities per year in expectation. I next show how two alternative regulatory provisions, including one slated to enter effect next year, can fully offset the negative safety consequences; minor changes in the regulation produce a robust, near-zero change in accident fatalities while conserving the same quantity of gasoline.

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Document Object Identifier (DOI): 10.3386/w18012

Published: “Fuel Economy and Safety: The Influences of Vehicle Class and Driver Behavior,” American Economic Journal: Applied Economics, Vol. 5, No. 3, 2013.

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