PROBLEM TO BE SOLVED: To improve the accuracy of calculating traffic flow.SOLUTION: A traffic flow calculation method includes: acquiring the number of times that trajectories corresponding to routes are observed by a moving sensor for observing trajectories of a moving body, for each of the routes including at least one edge of a road network formed by representing a road system with a plurality of nodes and edges; acquiring the number moving bodies detected by fixed sensors, for each of fixed-sensor edges corresponding to the positions of fixed sensors observing the moving body passing through fixed positions, out of the edges included in the road network; estimating an observation rate represented by a ratio of the number of observations of the moving sensor with respect to an actual traffic flow of the routes, on the basis of the acquired number of observations for each route and the number of observations of the fixed sensor edges included in the routes, for each route; and calculating traffic flow for each route, on the basis of the estimated observation rate for each route and the acquired number of observations for each route.SELECTED DRAWING: Figure 1

    【課題】交通流量の算出精度を向上させる。【解決手段】道路網を複数のノード及び複数のエッジで表した道路ネットワークの少なくとも1つのエッジを含む経路毎に、移動体の移動軌跡を観測する移動センサにより、該経路に対応する移動軌跡が観測された観測数を取得すると共に、前記道路ネットワークに含まれるエッジのうち、固定位置を通過する移動体を観測する固定センサの位置に対応する固定センサエッジ毎に、前記固定センサにより観測された移動体の観測数を取得し、取得した経路毎の観測数と、該経路に含まれる固定センサエッジの観測数とに基づいて、該経路の実際の交通流量に対する前記移動センサによる観測数の割合で表される観測率を経路毎に推定し、推定した経路毎の観測率と、取得した経路毎の観測数とに基づいて、経路毎の交通流量を算出する。【選択図】図1


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    Title :

    TRAFFIC FLOW CALCULATION METHOD, APPARATUS, AND PROGRAM


    Additional title:

    交通流量算出方法、装置、及びプログラム


    Contributors:

    Publication date :

    2017-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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