Based on the automatic fare collectionc (AFC), data of Changsha Metro, intercity tourists who arrived at Changsha via the metro external transportation transfer stations are identified. Based on their stay time in Changsha, these tourists are clustered into three groups using Gaussian mixture model, and they are mainly identified to three stay pattern types: the day-return type, the one-night type and the two-night type. The research results show that in terms of travel purpose, all three groups mainly travel to the Wuyi Square-centered core business district of Changsha. Generally, the proportion of overnight passenger flow is higher when it is far away from the city center, and the proportion of the day-return passenger flow increases when it is close to the city center. The day-return passenger flow mostly meets short-term travel needs, such as sightseeing and business. The two-night group has the more complex travel needs, such as medical treatment and transfer. The one-night group is a transitional group that has both characteristics. In terms of travel time, the group that stays in Changsha for a longer time usually has a longer metro travel time. The study of travel characteristics of intercity tourist passenger flow can provide decision-making references for relevant transportation planning and management departments, help optimize the rail transit network, and improve the travel experience of passengers.
长株潭都市圈是我国中部第一个获批的国家级都市圈,由湖南省长沙市、株洲市和湘潭市3个城市组成,其相距均不到40 km. 2022年,长株潭都市圈地区生产总值达2 028亿元,占湖南省地区生产总值的41.7%,成为拉动全省经济发展的火车头. 作为湖南省省会和国家特大城市,长沙是长株潭都市圈核心城市,也是唯一开通城市轨道交通线路的城市. 作为著名“网红城市”,长沙文旅、商业等服务产业发达,拥有五一广场、橘子洲、岳麓山等大批旅游景点,吸引了大量的外来旅游客流. 截至2023年4月,长沙已开通运营6条地铁线路,分别为1、2、3、4、5和6号线,总长度190.6 km. 地铁线网覆盖范围广,涵盖了长沙市的主要功能区,包括芙蓉区、天心区、雨花区、岳麓区、开福区以及长沙县部分区域. 此外,还实现了不同交通系统之间的便捷换乘,形成了四通八达的交通网络.
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