Free public transport to the destination: A causal analysis of tourists’ travel mode choice
研究瑞士一项为过夜游客提供免费公共交通的政策如何影响其出行方式选择，发现该政策使私家车转向公共交通的比例平均提高14.8至11.6个百分点，对政策制定者有参考价值。
In this paper, we assess the impact of a fare-free public transport policy for overnight guests on travel mode choice to a Swiss tourism destination. The policy directly targets domestic transport to and from a destination, the substantial contributor to the CO2 emissions of overnight trips. Based on a survey sample, we identify the effect with the help of the random element that the information on the offer from a hotelier to the guest varies in day-to-day business. We estimate a shift from private cars to public transport due to the policy of, on average, 14.8 and 11.6 percentage points, depending on the application of propensity score matching and causal forest. This knowledge is relevant for policy-makers to design future public transport policies for tourists. Overall, our paper exemplifies how such an effect of natural experiments in the transport and tourism industry can be properly identified.