| US 7,609,176 B2 | ||
| Traffic information prediction apparatus | ||
| Kenichiro Yamane, Tokyo (Japan); Yoshinori Endo, Zama (Japan); Kimiyoshi Machii, Tokyo (Japan); and Junsuke Fujiwara, Tokyo (Japan) | ||
| Assigned to Hitachi, Ltd., Tokyo (Japan) | ||
| Filed on Feb. 10, 2005, as Appl. No. 11/53,902. | ||
| Claims priority of application No. 2004-053548 (JP), filed on Feb. 27, 2004. | ||
| Prior Publication US 2005/0206534 A1, Sep. 22, 2005 | ||
| Int. Cl. G08G 1/123 (2006.01) | ||
| U.S. Cl. 340—994 [340/988; 340/989; 701/209; 701/210] | 8 Claims |
| 1. A traffic information prediction apparatus that has a function for predicting an arrival time at a destination, comprising:
map data containing road data;
a route searching means for searching a travel route from a current place to the destination on the basis of the map data;
statistical traffic information obtained by statistical processing past accumulated traffic information;
a travel status measuring means for measuring a travel status of a vehicle and accumulating the travel status of the vehicle
thus measured as travel record information;
a traffic information predicting means for predicting traffic information on a searched route on the basis of the travel record
information and the statistical traffic information to predict arrival time at any place on the route containing the destination;
and
a prediction result outputting means for outputting a prediction result,
wherein the traffic information predicting means compares a traveling trace based on the statistical traffic information on
the searched route from a departure to the destination and a traveling trace based on the travel record information to calculate
a degree of progress of the travel record to the statistical traffic information, and corrects the traveling trace based on
the statistical traffic information from the current place to the destination on the basis of the degree of progress to predict
an arrival time at a representative point including the destination on the travel route.
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