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The influence of high-speed rail on international technology spillover in China: an empirical analysis based on PPML model

Based on China's prefecture-level city data from 2002 to 2018, this study empirically analyzes the impact of high-speed rail (HSR) connection on international technology spillover. The results find that one new HSR train serving a city facilitates international technology spillover. Heterogeneous analyses show that the western in China is significantly affected by HSR connection, which the effect is not obvious in the eastern due to the original developed transportation network. Further examination shows that the effect of HSR connections is stronger for regions with lower initial human capital with regard to international knowledge flow.