To provide a technique in which a search frequency of a planned travel route according to a traffic signal indication does not become excessive.SOLUTION: A route search system includes: a route search unit for searching a planned travel route based on an arrival indication that is an indication of a traffic light at an estimated arrival time at a signal point where the traffic light is installed; an information update unit for updating the estimated arrival time and the arrival indication for a signal point on a guide route based on a travel speed on the guide route of the planned travel route under guide; and a search request unit for requesting the route search unit to search the planned travel route again when the arrival indication changes from a reference time that is a guide rout search time. Even when the arrival indication has changed from the reference time, the search request unit does not request for the route search unit to search the planned travel route again if a change width in the estimated arrival time from the reference time is less than a reference period set based on a change period of the traffic signal.SELECTED DRAWING: Figure 3

    【課題】信号機の現示に応じた移動予定経路の探索頻度が過度とならない技術を提供する。【解決手段】経路探索システムは、信号機が設置された信号地点に対する到着予定時刻における信号機の現示である到着現示に基づいて移動予定経路を探索する経路探索部と、案内中の移動予定経路である案内経路上における移動速度に基づいて、案内経路上の信号地点についての到着予定時刻と到着現示とを更新する情報更新部と、案内経路の探索時である基準時から到着現示が変化した場合に、経路探索部に対して移動予定経路を再度探索するように要求する探索要求部と、を備え、探索要求部は、基準時から到着現示が変化した場合であっても、基準時からの到着予定時刻の変化幅が、信号機の現示の変化周期に基づいて設定された基準期間未満である場合に、経路探索部に対して移動予定経路を再度探索するように要求しない。【選択図】図3


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    Title :

    ROUTE SEARCH SYSTEM AND ROUTE SEARCH PROGRAM


    Additional title:

    経路探索システムおよび経路探索プログラム


    Contributors:

    Publication date :

    2020-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G09B Unterrichts- oder Vorführungsgeräte , EDUCATIONAL OR DEMONSTRATION APPLIANCES



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