Patent ID: 7047130

Claim:
A road status data providing system including a server for transmitting/receiving data via a communication line and a plurality of vehicle terminals, wherein: said server comprises: a transmitting/receiving unit for transmitting/receiving data to and from said plurality of vehicle terminals; a vehicle trend management database for managing vehicle trends of said plurality of vehicle terminals; a totaling unit for totaling status data indicative of a status of vehicles at a prescribed point on the basis of said vehicle trend management database; a route searching unit; and an estimated route searching unit; each of said vehicle terminals comprises: a transmitting/receiving unit for transmitting/receiving data to and from said server; a present position determining unit for determining the present position of the vehicle; and a creating unit for creating status data requesting information for acquiring the status data at said prescribed point; and said totaling unit in the server totals the number of vehicles running toward said prescribed point on the basis of the status data requesting information transmitted by said vehicle terminal; said route searching unit is for searching a route from the present position to the destination on the basis of destination information transmitted from said vehicle terminal; said estimated route searching unit is for estimating the destination of a vehicle to search the route to said destination for the vehicle which is managed by said vehicle trend management database and is not conducting the route searching; and said vehicle trend management database in said server also stores the route searching result by said route searching unit and the estimated route searching result by said estimated route searching unit.