Study on Accident Risk considering Traffic States and Road Geometry in Intercity Expressways

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Other Title
  • 交通流状態と幾何構造を考慮した都市間高速道路の事故発生リスク分析

Abstract

<p>This research aims to investigate the relationships between the accident risk and various factors such as traffic states, road geometries and weather conditions. Abundant study has been conducted to identify the accident risk factors for inner city highways. However, few has been reported for intercity expressways. This research first defines the traffic environment categories. The category considers traffic states, horizontal and vertical alignment, tunnel and precipitation. In defining the traffic states, this research proposes the method to identify the four states: free flow, capacity flow, congestion and mixed-state flow. Then, the accident risk is calculated for each traffic environment category to reveal the effect of the factors on accident risk. The results identified that the risk of sideswipe accident in mixed traffic state is higher in multiple lane sections. The study also revealed that the risk of crash accident is higher in the entrance of tunnels. Future research needs include the development of accident risk estimation model based on the findings from this study.</p>

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Details 詳細情報について

  • CRID
    1390282763099065984
  • NII Article ID
    130007592893
  • DOI
    10.14954/jste.5.2_a_199
  • ISSN
    21872929
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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