Fuel Economy, Car Class Mix, and Safety
研究了燃油经济性标准如何改变车辆构成，进而影响事故致死风险，发现当前区分轻型卡车和轿车的规则每提高1英里/加仑标准每年预期多造成150人死亡，并提出替代方案。
Fuel economy standards change the composition of the vehicle fleet, potentially influencing accident fatality risks. I estimate the direction and magnitude of this impact, introducing a correction for selection on driver behavior. A policy application using my new estimates shows that the present distinction between light trucks and cars in fuel economy rules has very negative consequences for overall safety: Each MPG increment to the standard results in an additional 150 fatalities per year in expectation. My correction for selection is pivotal in this finding. I then demonstrate a simple alternative regulation that can produce near-zero changes in accident fatalities.