NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Effect of Fuel Economy Standards on Vehicle Weight Dispersion and Accident Fatalities

Antonio Bento, Kenneth Gillingham, Kevin Roth

NBER Working Paper No. 23340
Issued in April 2017
NBER Program(s):Environment and Energy Economics

The firm response to regulation is seldom as controversial as in the context of fuel economy standards, a dominant policy to reduce emissions from vehicles worldwide. It has long been argued that such standards lead to vehicle weight changes that increase accident fatalities. Using unconditional quantile regression, we are the first to document the effect of the Corporate Average Fuel Economy (CAFE) standards on the vehicle weight distribution. We find that on net CAFE reduced fatalities, with lowered mean weight dominating increased dispersion. When monetized, this effect suggests positive net benefits from CAFE even with no undervaluation of fuel economy.

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Document Object Identifier (DOI): 10.3386/w23340

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