Browsing by Author "Diamond, David"
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Item Public Policies for Hybrid-Electric Vehicles: The Impact of Government Incentives on Consumer Adoption(2008-03-31T14:16:35Z) Diamond, David; Diamond, DavidThis dissertation examines the outcomes and effectiveness of public policies designed to promote the adoption of hybrid-electric vehicles (HEVs). As a primary methodology, I employ cross-sectional analysis of hybrid registration data over time for U.S. states and Virginia municipalities to examine the relationship between hybrid adoption and a variety of socioeconomic and policy variables. I also compare hybrid adoption patterns over time to the U.S. average for specific states that have changed incentive policies, to determine whether these policy changes are consistent with significant changes in adoption patterns. The results of these analyses suggest a strong relationship between gasoline prices and hybrid adoption, but a much weaker relationship between incentive policies and hybrid adoption. Incentives that allow hybrids to access High Occupancy Vehicle (HOV) lanes with only one occupant may also be effective in promoting adoption, but only under specific circumstances and with the potential for significant unintended consequences.Item The Determinants of Hybrid-Electric Vehicle Adoption: Insights from State Registration Data(2006-12-15T18:08:14Z) Diamond, David; Auerswald, PhilipThis paper examines the effect of tax incentives, gasoline prices and other socio-economic factors on the demand for Hybrid Electric Vehicles (HEVs) in different U.S. states. As hybrid sales increase, it is important for policymakers to understand how these factors influence demand in order to judge the effectiveness of competing HEV incentive policies. The paper develops a demand model for per-state market-share, and uses cross-sectional time-series data on new Hybrid Electric Vehicle (HEV) registrations in different U.S. states in 2003 and 2004 to evaluate the significance of difference factors. In 2003, a number of predictors were significant, suggesting different policy alternatives for promoting adoption. In 2004, when demand for the Toyota Prius exceeded supply, HEV registrations were explained almost entirely by dealer location.