OD estimation method based on flow data of etc gantry

By using a multi-level OD back-calculation method based on ETC gantry traffic data, the problems of insufficient real-time performance and regional hierarchical adaptability of existing OD back-calculation methods are solved. This method enables real-time dynamic correction of traffic flow forecasts and accurate regional division, thereby improving forecast accuracy and management efficiency.

WO2026109076A1PCT designated stage Publication Date: 2026-05-28HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2025-12-18
Publication Date
2026-05-28

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Abstract

An OD estimation method based on flow data of an ETC gantry, which method solves the problem of it being difficult to reflect traffic mobility by means of an existing OD estimation method, and belongs to the field of traffic engineering and intelligent traffic systems. The method in the present invention comprises: determining that the research objective is region-level OD estimation, city-level OD estimation or expressway-level OD estimation; dividing constitution regions involved in the research objective into direct traffic impact regions and indirect traffic impact regions according to the degree of influence; dividing the direct traffic impact regions and the indirect traffic impact regions into traffic regions according to administrative region units and expressway sections; acquiring flow data of selected ETC gantries in real time, so as to obtain the hourly traffic volume of each ETC gantry, and then in view of the positions of the ETC gantries, matching the obtained hourly traffic volumes into an existing road network, so as to obtain road network section flows; using the obtained traffic regions as origins and destinations, selecting road network section flows of ETC gantries for OD estimation, and performing OD matrix estimation; and verifying an estimated OD matrix.
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Citation Information

Patent Citations

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