Study on the heterogeneity of travel satisfaction of high-speed railway passengers with different distances

The rapid development of China's high-speed railways (HSRs) and the reform of railway market revenue have promoted the formation and improvement of the bilateral railway passenger market. This paper explores the travel perception psychology of HSR passengers at different distances based on travel satisfaction. First, based on the passenger travel data of the Nanning-Guangzhou (NG) HSR line, the K-means clustering method is used to divide passengers into three categories: short-distance, medium-distance and long-distance travel. Secondly, based on the HSR passenger satisfaction index (HSR-PSI) structural equation, the key driving factors of HSR passengers' perceived satisfaction are classified and quantified, and the heterogeneity of the perceived levels of satisfaction factors of passengers with different travel distances is analyzed in multiple groups. Finally, specific intervention measures for passengers with different travel distances are determined through Importance Performance Map analysis (IPMA), and targeted suggestions for increasing passengers' satisfaction with HSR travel are proposed.