Patent ID: 9534921
Date: 2017-01-03
CPC Classifications: B60W,G01C,G08G

Claim:
1. A navi-server, comprising: a first server arithmetic processing element that is configured to receive, from a navi-client, probe information representing a time-series change manner of a position of the navi-client; a second server arithmetic processing element that is configured to create road traffic information based on the probe information; and a server storage device that stores the road traffic information, wherein the first server arithmetic processing element is configured to receive the probe information including an identifier set to indicate a communication state between the navi-client and a device mounted on a designated travelling means or a state of attachment/detachment of the navi-client to an instrument attached to the designated travelling means, and the second server arithmetic processing element is configured to discriminate or select the probe information in accordance with a difference of the identifier, and generate the road traffic information based on the discriminated or selected probe information.