新潟都市圏道路網における交通事故発生リスク統合データベースの構築と情報提供によるドライバーの経路選択行動の分析  [in Japanese] DEVELOPMENT OF INTEGRATED TRAFFIC DATABASE FOR TRAFFIC ACCIDENT RISK INFORMATION PROVISION IN NIIGATA URBAN AREA AND ANALYSIS ON ROUTE CHOICE BEHAVIOR BASED ON STATED PREFERENCE SURVEY  [in Japanese]

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Abstract

本稿は,新潟都市圏における高速道路,新潟・新新バイパス,その他街路における交通事故発生リスク情報をドライバーに提供するため,基礎となるデータベースを構築した結果を報告する.具体的には,異なる道路管理者等が持つ交通データと交通事故データ,その他道路構造等の情報を一元的にまとめたデータベースを構築し,気象条件や時間帯等の各種要因を考慮して,道路種別ごとに交通事故発生リスクの比較を可能とした.本稿では,データベースの概要,新潟都市圏の道路網における交通事故発生リスクを道路種別で比較した結果を報告する.加えて,得られた知見に基づき設計したSP調査を実施し,交通事故発生リスクが情報提供された際のドライバーの経路選択行動を分析し,新潟都市圏における交通事故発生リスク情報の提供可能性についても考察した.

This paper describes development of integrated traffic data base for traffic accident risk information provision on Niigata urban area road network. By cooperations of the Niigata National Highway Office, East Nippon Expressway Company and Niigata Police Agency, detector data, traffic accident records and road geometric design data and weather data has been integrated to be possible to compare the accident risk characteristics between different road types. Characteristics of traffic accident risk by several factors in study site has been analyzed. Results of the analysis quantitatively showed accident risk on expressway is much lower than other arterial road including Niigata-Shinshin bypass road. The analysis also showed that traffic congestion and weather condition (rain and snow fall) affect to occur higher accident risk traffic situation. In addition to that, stated preference survey designed based on actual situation of traffic accident risk on Niigata urban area is conducted to analyze route choice behavior of the driver in the study site. Binomial logit model that is driver choose expressway or arterial road in the study site is applied. Model parameter estimation results showed us that drivers tends to choose the lower accident risk road if the accident risk information is provided. Especially emphasized information such as accident risk on the road is ten times higher than the other road is preferred compared to numerical information. Moreover authors confirmed that estimated model can install into traffic simulation to evaluate traffic condition under traffic accident risk information provision, and discuss how to implement proposed traffic accident risk management schemes in the Niigata urban area.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management)

    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) 74(5), I_1419-I_1428, 2018

    Japan Society of Civil Engineers

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