Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
We analyze the effectiveness of California's “Replace Your Ride” policy, a pilot program that gives subsidies to lower income households in the greater Los Angeles area to retire older vehicles and replace them with newer, cleaner vehicles. Using a differences in differences strategy to compare changes in new vehicle purchase probabilities between income eligible and ineligible households before and after the implementation of the program, we find that in 2015, upwards of 44% of plug-in electric vehicle and 78% of hybrid vehicle purchases under the program were additional.