Mandates-(g)


 * Kahn, Matthew E. “New Evidence on Trends in Vehicle Emissions.” __The RAND Journal of__ __Economics__ 27, no. 1 (Spring 1996): 183-196.**

Kahn reports that “Aggregate vehicle emissions have fallen even though total miles driven have increased” (p. 183). In this analysis, Kahn “uses two new cross-sectional databases to study vehicle emissions profiles. [He found] evidence of large differences in vehicle emissions across model years, makes and sizes. These findings are relevant for evaluating the benefits of previous regulatory efforts and for predicting the benefits of further vehicle regulation” (p. 183). A key insight Kahn makes is that “emissions [fell] when new-car emissions [regulations] became more stringent” (p. 194). Kahn’s analysis highlights the impact of federal regulations on the reduction of greenhouse gas emissions, and implies that federal regulations should be a part of future energy policy choices. **(Hilary Straus)**

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