| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation server for providing a user of a vehicle an appropriate departure time of the day in terms of improvement in fuel efficiency of the vehicle. SOLUTION: The navigation server 1 appropriately estimates fuel consumption for driving a vehicle Q from a departure position P1 along a supported route R to a destination P2 based on a fuel consumption matrix for each of a plurality of departure times of the day, considering that the fuel consumption varies depending on a link on which the vehicle Q drives and the time of the day when it drives on the link. Fuel consumption information regarding estimated total fuel consumption for each of the plurality of departure times of the day is transmitted to the vehicle Q or the like. COPYRIGHT: (C)2010,JPO&INPIT |
