도시부 ATIS 효율적 적용을 위한 탐색영역기법 및 양방향 링크탐색 알고리즘의 구현

An Integration of Searching Area Extraction Scheme and Bi-directional Link Searching Algorithm for the Urban ATIS Application

  • 이승환 (아주대학교 교통공학과) ;
  • 최기주 (아주대학교 교통공학과) ;
  • 김원길 (해태전자 정보통신사업 본부 ITS 사업부)
  • 발행 : 1996.09.01

초록

The shortest path algorithm for route guidance is implicitly required not only to support geometrical variations of transportation network such as U-TURN or P-TURN but to efficiency search reasonable routes in searching mechanism. The purpose of this paper is to integrate such two requirements ; that is, to allow U-TURN and P-TURN possibilities and to cut down searching time in locating routes between two points (origin and destination) in networks. We also propose a new type of link searching algorithm which can solve the limitation of vine building algorithm at consecutively left-turn prohibited intersections. The test site is a block of Gangnam road network that has some left-turn prohibited and allowed U-TURN intersections. Four models have been identified to be comparatively analyzed in terms of searching efficiency. The Models are as follows : (i) Model 1 - Link Searching Dijkstra Algorithm without Searching Area Extraction (SAE) ; (ii) Model 2 - Link Searching Dijkstra Algorithm with SAE ; (iii) Model 3 - Link Searching Bidirectional Dijkstra Algorithm without SAE ; and (iv) Model 4 - Link Searching Bidirectional Dijkstra Algorithm with SAE. The results of comparative evaluation show that Model 4 can effectively find optimum path faster than any other models as expected. Some discussions and future research agenda have been presented in the light of dynamic route guidance application of the urban ATIS.

키워드

참고문헌

  1. 네트워크와 알고리즘 강맹규
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  4. 대한교통학회지 v.13 no.3 U-TURN을 포함한 가로망의 표현 및 최단경로의 구현 최기주
  5. 1994 IVHS America Annual Meeting Estimation of Link Travel Times with a Large-scale Network Flow Model for a Dynamic Route Guidance System D.E.Boyce;A.Tarko;S.Berka;Y.Zhang
  6. VNIS Conference Proceedings,1994 Development of Elemental Algorithms for Future Dynamic Route Guidance System Hiroshi Shimoura;Kenji Tenmoku
  7. Avebury Technical Traffic Assignment Techniques Roy Thomas