MAP MATCHING SYSTEM, MAP MATCHING METHOD AND PROGRAM

摘要

[PROBLEMS] A general purpose map matching system in which map matching can be carried out at high rate while sustaining precision of analysis based on the matching result even when event data is transmitted from a large quantity of vehicles. [MEANS FOR SOLVING PROBLEMS] A grid road generation means (8) generates each grid by dividing a region where a road network exists in the latitude direction and the longitude direction at regular intervals based on data stored in a road network storage means (2). Such grids as the set of passing roads is identical are integrated. An event grid matching means (401) associates event data collected from vehicles with the grid. An event processing priority judging means (402) selects a part of event data when there are many event data associated with the grid. An event road matching means (403) associates the selected even data with a road in the grid.