Abstract
Mobile phone data provides information, such as the home (origin) and current locations of people. The data can be used to analyze the impact of new high-speed railway (HSR) openings. This study examined the population observed in stations and cities of the Honam HSR line in Korea, based on mobile phone data recorded one year before and after its opening. We analyzed the volume of the population observed at each railway station, density of the distance between home and station, and activity hotspots in a city. The results show that the number of people and travel distance increased after the opening of the HSR. The distance to access railway stations increased, as the HSR saves travel time. Moreover, the activity hotspots in a city increased after the opening of the HSR, as more people gathered near the station area. The findings show that the mobility measures enhanced after the opening of the HSR for regional travel and local activities. These measures can help transit agencies and planners in providing better intercity travel.
Highlights
Opening a new high-speed railway (HSR), as a transport-mobility enhancement strategy, has been approved by policymakers in many countries
The results showed that the effect of Korea Train Express (KTX) on the local department store market is positive, except in the Daegu metropolitan area
We developed hotspot maps of four cities along with the volume level of mobile population to whether the HSR changes at the hotspots in these cities
Summary
Opening a new high-speed railway (HSR), as a transport-mobility enhancement strategy, has been approved by policymakers in many countries. The HSR network is expected to reach 25,000 km by 2020, even though the cost of construction, maintenance, and operation of HSRs is high [1]. Because of the remarkable increase in accessibility owing to the HSR, cities connected to the railway line have realized new opportunities and changes of all aspects in our society. Urban regeneration opportunities, increasing diverse individual activities owing to the reduced travel time while increasing personal time, providing higher quality of service than competing modes, and/or influencing local economics through individuals changing homes and jobs. Many countries have conducted extensive studies on the impact of HSR from various perspectives, such as regional socioeconomics, changes in transport mode shares, and travel patterns [2,3].
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