Journal of Korean Society of Transportation (대한교통학회지)

Korean Society of Transportation (대한교통학회)
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Modelling En-route Diversion Behavior under On-site Traffic Information

관측 교통정보를 이용한 통행중 경로전환행태 모형

  • 김혜란 (서울대학교 지구환경시스템공학부) ;
  • 전경수 (서울대학교 지구환경시스템공학부) ;
  • 박창호 (서울대학교 지구환경시스템공학부)
  • Published : 2004.06.30
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Abstract

The real-time traffic information is considered to be the system to alleviate traffic congestion. An effective traffic information will help drivers make efficient travel decision, and network performance will be improved. To make efficient strategy of providing information, the analyst should quantify reduced congestion by the media traffic informations. Many other route diversion models considered only media-informations as information sources and ignored the impact of on-site informations such as visible delays and average speeds, which affect drivers' route diversion decision in practice. In those models, the effect of on-site informations could be treated to be the effect of media informations, and the effects of media informations would be over-estimated. The proposed model including the impact of on-site information can estimate the effect of media-informations. The results are expected to be applied to the analysis of traffic management policy such as ITS.

실시간 교통정보 제공을 통하여 네트웍의 혼잡 완화를 효과적으로 도모할 수 있는 혼잡관리 전략을 마련하기 위해서 먼저 매체를 통해 제공되는 정보의 효과를 계량화할 필요가 있다. 이를 위하여 우선적으로 교통정보의 제공에 따른 개별 운전자의 경로전환 의사결정에 대한 보다 명확한 이해가 뒷받침되어야 한다. 지금까지의 경로전환 행태에 관한 대부분의 연구들은 정보매체로부터 취득한 정보가 경로전환에 미치는 영향을 분석하였을 뿐, 실제로 경로전환 의사결정에 영향을 미치는 관측 가능한 대기행렬이나 평균 주행 속도 등의 관측정보는 모형화하지 않았다. 따라서 관측정보로 인한 영향이 매체정보의 효과로 간주되고, 매체정보의 효과는 과대평가 되었을 우려가 있다. 본 연구에서는 출 퇴근 통행을 하는 운전자가 통행 중에 매체정보 및 관측정보를 취득하여 경로를 전환하는 의사결정 행태를 모형으로 구축하였다. 아울러 관측정보를 고려함으로써 매체의 효과를 합리적으로 평가할 수 있음을 보였다. 이 모형을 활용하여 ITS 정보 제공에 따른 혼잡완화 효과를 보다 합리적으로 설명할 수 있으며, 이는 교통혼잡 관리를 위한 정책적 분석에 활용될 수 있을 것으로 기대된다.

Keywords

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