| 摘要 |
A navigation device (10) having measurement means (12) for measuring both (i) the position of travel of a mobile body driven by a driver and (ii) travel information as information on traveling conditions; determination means (22) for determining the degree of danger based on the measured traveling conditions; point processing means (22 etc.) for adding/subtracting a point corresponding to the determined degree of danger; providing means (19, 20, etc.) for providing the driver with a message; acquisition means (16 etc.) for acquiring accident information; and control means (22 etc.) for controlling, based on the acquired accident information, the providing means so that a predetermined message corresponding to the point obtained by addition/subtraction is provided.
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