Road information provision server, road information...

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Traffic analysis or control of surface vehicle

Reexamination Certificate

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Details

C701S209000

Reexamination Certificate

active

07418338

ABSTRACT:
A road information provision system or route search system has a terminal device such as a car navigation device20a, portable telephone20b, or PC20cwhich specifies routes and issues requests for road information; a VICS center40which provides congestion information; a road information provision/route search server10which, in response to requests from terminal devices20ato20c, generates road information based on congestion information from the VICS center40, and provides the road information to the terminal devices20ato20c; a dedicated circuit network50which connects the road information provision server10and VICS center40by dedicated circuits; a network30which connects the terminal devices20ato20cand road information provision/route search server10to enable communication; and a GPS60which provides position information. The system can determine shortest-route information of distance or time and congestion information.

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