CONGESTION DETERMINATION DEVICE

PROBLEM TO BE SOLVED: To provide congestion information by using a road link in ordinary map data without using a dedicated link.SOLUTION: A congestion determination device detects a low speed section in which mobile bodies move at a predetermined speed or less, based on a speed of the mobile bodies...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HORIUCHI NAOAKI, KAMATA TAKAHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PHYSICS PLANETARIA SEALS SIGNALLING TRAFFIC CONTROL SYSTEMS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide congestion information by using a road link in ordinary map data without using a dedicated link.SOLUTION: A congestion determination device detects a low speed section in which mobile bodies move at a predetermined speed or less, based on a speed of the mobile bodies such as vehicles, and determines whether the low speed section is longer than a predetermined distance and determines that the low speed section longer than the predetermined distance is a congestion section. In a case of the low speed section shorter than the predetermined distance, it may be caused by, for example, a wait at a stoplight, a temporary stop, or the like with no congestion actually generated, accordingly exclusion thereof improves accuracy in congestion determination.SELECTED DRAWING: Figure 7 【課題】専用リンクを使用することなく、通常の地図データの道路リンクを利用して渋滞情報を提供する。【解決手段】渋滞判定装置は、車両などの移動体の速度に基づいて、移動体が所定速度以下で移動している低速区間を検出する。そして、低速区間が所定距離より長いか否かを判定し、所定距離より長い低速区間を渋滞区間と判定する。所定距離より短い低速区間は、例えば信号待ち、一時停止など実際には渋滞は発生していない場合もあるので、これらを除外することにより渋滞判定の精度を向上させる。【選択図】図７