道路案内標識ネットワークの客観的評価と改善

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  • The Objective Evaluation and Improvement of Route Guide Sign System.
  • ドウロ アンナイ ヒョウシキ ネットワーク ノ キャッカンテキ ヒョウカ ト

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The route guide sign system is one of the route induction system in the road traffic. However, there are cases that some addresses are unfit in the network, on regard to addresses among the route guide sign boards. Sometimes, this system is not kind for drivers. We study for the optimization of the above route guide sign system.<br>One of evaluation methods of route guide sign system is the method using drive simulator. An overall evaluation can be done by using the drive simulator, but each driver's subjectivity are included in the evaluation results.<br>In this paper, we propose the new method of objective evaluation using conditions of appropriate induction addresses for optimization route guide sign system. There are three conditions, induction considering each lines, induction considering direction at crossing point, and continuation of induction addresses on route guide sign board. And we suggest the method to improve these system using the result of its evaluation.<br>Finally, we show an example of above evaluation method and improvement to the route guide sign system at the Northwest CHIBA area.

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