AN EVALUATION METHOD ON EFFECTS OF DYNAMIC TRAFFIC INFORMATION PROVISION

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  • リアルタイム交通情報の提供効果
  • リアルタイム コウツウ ジョウホウ ノ テイキョウ コウカ

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Abstract

This study proposes a realistic method to evaluate impacts of dynamic traffic information provision, and the method is applied to a real urban expressway network using observed OD volumes. Although traffic information has been dynamically provided through VMS, on-board equipment, highway radio etc., the impacts on traffic have not been well evaluated by taking the daily OD demand fluctuation. We therefore propose a new evaluation method considering the OD demand variation and show a possibility that the information provision may lead to total travel time increase. To examine this possibility, the method is then applied to the Tokyo Metropolitan Expressway network for one month. As a result, it is confirmed that dynamic traffic information provision would not be effective under regular traffic conditions except at the beginning of a peak. However, the benefit arises in unusual traffic conditions caused by incidents.

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