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교통카드 단말기ID Chain OD를 반영한 최적경로탐색 - 수도권 철도 네트워크를 중심으로 -

Optimal Path Finding Considering Smart Card Terminal ID Chain OD - Focused on Seoul Metropolitan Railway Network -

  • 이미영 (국토연구원 국토계획.지역연구본부)
  • 투고 : 2018.10.11
  • 심사 : 2018.11.09
  • 발행 : 2018.12.31

초록

교통카드자료에서 철도이용승객이동은 단말기ID 순서로 나타난다. 최초 단말기ID는 진입역사 Tag-In노선, 최종 단말기ID는 진출역사 Tag-Out노선, 중간 단말기ID는 환승역사 Tag노선정보를 각각 포함한다. 과거 3개 공사기관(서울교통공사, 인천교통공사, 한국철도공사)만 참여하던 수도권도시철도는 최초 및 최종 단말기ID로 표현된 OD만 존재했다. 최근 (주)신분당선, (주)우이-신설경전철 등 민자기관진입으로 진입환승노선 단말기ID와 진출환승노선 단말기ID가 포함된 Chain OD가 보편화되었다. Chain OD를 통한 정확한 경로구축과정은 수도권철도운송기관의 수입금배분의 기초자료로서 매우 중요한 위치를 차지하고 있다. 따라서 지하철네트워크에서 경로탐색은 Chain OD에 대한 최적경로탐색의 문제로 전환되어 새로운 해법이 요구된다. 본 연구는 철도네트워크에서 단말기 Chain OD의 최초 단말기ID와 최종 단말기ID 간의 최적경로탐색기법을 제안하는 것이다. 이때 Chain OD에 민자노선환승 TagIn/Out를 반영하여 최적경로를 탐색하는 방안을 강구한다. 이를 위해 링크표지로 구축된 3가지 경로탐색기법( 1) 노드 - 링크, 2) 링크 -링크, 3) 링크 -노드 )을 순차적으로 적용하는 방안을 제안한다. 가산성경로비용을 토대로 제안된 기법이 최적조건을 만족함을 증명한다.

In smart card data, movement of railway passengers appears in order of smart card terminal ID. The initial terminal ID holds information on the entering station's tag-in railway line, the final terminal ID the exit station tag-out railway line, and the middle terminal ID the transfer station tag subway line. During the past, when the metropolitan city rail consisted of three public corporations (Seoul Metro, Incheon Transit Corporation, and Korail), OD data was expressed in two metrics of initial and final smart card terminal ID. Recently, with the entrance of private corporations like Shinbundang Railroad Corporation, and UI Corporation, inclusion of entering transfer line terminal ID and exiting transfer line terminal ID as part of Chain OD has become standard. Exact route construction using Chain OD has thus become integral as basic data for revenue allocation amongst metropolitan railway transport corporations. Accordingly, path detection in railway networks has evolved to an optimal path detection problem using Chain OD, hence calling for a renewed solution method. This research proposes an optimal path detection method between the initial terminal ID and final terminal ID of Chain OD terminal IDs within the railway network. Here, private line transfer TagIn/Out must be reflected in optimal path detection using Chain OD. To achieve this, three types of link-based optimum path detection methods are applied in order of 1. node-link, 2. link-link, 3. link-node. The method proposed based on additional path costs is shown to satisfy the optimal conditions.

키워드

참고문헌

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