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Abstract
The Obama administration seeks to tighten the fuel economy standards in the US and the target is to almost double the miles per gallon (MPG) of vehicles by 2025 comparing to that of 2010. With this new aggressive movement, there is an ongoing discussion about whether auto makers could meet the new standards without providing consumers with vehicles that are much lighter and less powerful. In this paper, we investigate how historical changes in the fuel economy standards impacted technological innovation in the automobile industry and estimate the changes in the rate of innovation in response to the changes in the standards. By decomposing innovation growth into natural growth and growth induced by standard changes, we not only show that standard changes can increase innovation growth but are also able to quantify the induced growth rate with respect to the rate of changes in standards. Such method can provide a more precise prediction of the future technological innovation under new standards.