To distinguish a natural jam and a traffic abnormal congestion.SOLUTION: An abnormal traffic flow device comprises: a traveling history information acquisition unit 2 that acquires traveling history information from a vehicle V traveling on a road of a plurality of one-way traffic lanes; a speed recovery distance calculation unit 3 that detects a point where a speed of the vehicle V becomes a congestion flow speed or less on the basis of the traveling history information, and calculates a speed recovery distance until the speed of the vehicle V is recovered to a prescribed free flow speed which is faster than the congestion flow speed; and a determination unit 7 that determines as an abnormal traffic flow when the speed recovery distance is a prescribed threshold value or less.SELECTED DRAWING: Figure 1
【課題】自然渋滞と交通異常渋滞とを区別する。【解決手段】片道複数車線の道路を走行する車両Vから走行履歴情報を取得する走行履歴情報取得部2と、走行履歴情報に基づいて、車両Vの速度が所定の渋滞流速度以下となる地点を検出し、車両Vの速度が当該渋滞流速度よりも速い所定の自由流速度に回復するまでの速度回復距離を求める速度回復距離算出部3と、速度回復距離が所定の閾値以下である場合、異常交通流と判定する判定部7とを有する。【選択図】図1
ABNORMAL TRAFFIC FLOW DETECTION DEVICE, ABNORMAL TRAFFIC FLOW DETECTION METHOD, AND ABNORMAL TRAFFIC FLOW DETECTION PROGRAM
異常交通流検出装置、異常交通流検出方法、及び異常交通流検出プログラム
2020-09-24
Patent
Electronic Resource
Japanese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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