보행자 경로안내 API정보를 활용한 대중교통 접근성 영향요인 분석 - 서울시 지하철역 보행 접근성을 중심으로 -

Abstract

본 연구에서는 보행자 경로안내 API 정보를 활용하여 대중교통 시설로의 접근성을 분석하고 그영향요인을 분석하고자 한다. 여기서 대중교통 시설은 서울시에 위치한 280개 지하철역으로 설정하였다. 나아가, 대중교통 시설로의 접근성 수준을 도출하는데 있어 보행거리뿐만 아니라 보행시간을 분석함으로써 보다 실질적인 접근성 수준을 확인한다.또한, 지하철역 주변의 물리적인 환경을 중심으로접근성 수준 개선을 위한 시사점을 도출한다. This study measures the pedestrian accessibility of 280 subway stations in Seoul using the pedestrian route guide API information. In addition, we identify the physical environment factors which affects the accessibility level. To account for walking environment, we use the pedestrian route guide information provided by SK Planet T-map API. Using the route guide API information enables to measure travel distance and time between two certain points with high accuracy. Main contributions of this research are as follows. First, we provide a new methodology for analyzing the accessibility level of subway stations based on real-world walking conditions. Second, our findings indicate that the accessibility level of subway stations varies from 30% to 80%. Third, the results imply that large blocks and large building groups around the subway station are highly associated with lower accessibility. In addition, border vacuums such as block size and railway showed negative relationship with the accessibility level. Last, the results show that physical environment factors that limit the opportunity of pedestrians’ route choice are the determinant factors of subway station accessibility level.