NAVIGATION SERVER, NAVIGATION DEVICE, NAVIGATION PROGRAM, METHOD FOR CONSTRUCTING NAVIGATION DEVICE, SERVER AND NAVIGATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a navigation system or the like capable of guiding a mobile device to a destination along a more appropriate route from the viewpoint of energy saving. SOLUTION: In accordance with a navigation system of the present invention, in a navigation server 100, an ecological index ECOjwhich is updated with the latest operating information in link Ljthrough which a second mobile device Q2passes is retrieved from a first database 101. A second database 102 is also constructed based on the eco-index ECOj. Moreover, an eco-index ECOkin a respective link Lkis recognized from the second database 102 based on identification information T of an automobile Q. Then, optimum recommended route is set based on the eco-index ECOkin the light of energy economy, and output on a navigation display of a navigation system 200. COPYRIGHT: (C)2008,JPO&INPIT