The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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A schedule-based Public Transit Routing Algorithm for Finding K-shortest Paths Considering Transfer Penalties

환승 저항을 고려한 운행시간표 기반 대중교통 다중 경로 탐색 알고리즘

  • 전인우 (서울시립대학교 공간정보공학과) ;
  • 남현우 (서울시립대학교 공간정보공학과) ;
  • 전철민 (서울시립대학교 공간정보공학과)
  • Received : 2018.05.17
  • Accepted : 2018.06.26
  • Published : 2018.06.30
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Abstract

Schedule-based public transit routing algorithm computes a single route that calculated minimum travel time using the departure and arrival times for each stop according to vehicle operation plan. However, additional factors such as transfer resistance and alternative route choice are not reflected in the path finding process. Therefore, this paper proposes a improved RAPTOR that reflected transfer resistance and multi-path searching. Transfer resistance is applied at the time of transfer and different values can be set according to type of transit mode. In this study, we analyzed the algorithm's before and after results compared with actual route of passengers. It is confirmed that the proposed algorithm reflects the various route selection criteria of passengers.

운행시간표 기반 대중교통 경로 탐색 알고리즘은 운행계획에 따른 정류장별 출 도착 시각을 이용하여 최소 이동 시간이 소요되는 단일 경로를 산출한다. 다만, 경로 계산 과정에서 환승 저항, 대안 경로 선택 등의 추가 요소들을 반영하는데 한계가 있다. 본 연구는 환승 저항 및 다중 경로 탐색이 반영된 개선된 RAPTOR 알고리즘을 제안한다. 환승 저항은 환승 시점에 적용되며, 교통수단 유형을 구분하여 적용하였다. 본 연구에서는 수도권 대중교통 이용승객의 실제 이동 경로를 기준으로 개선 전 후의 알고리즘 결과를 분석하였다. 이를 통해 제시한 알고리즘이 승객의 다양한 경로 선택 기준을 반영한다는 것을 확인하였다.

Keywords

References

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