| 摘要 |
Provided are a navigation system and the like capable of improving, in consideration of the position of the user, the use value of a navigation route obtained in response to a present request. According to the navigation system, when a present request (Req(i)) including a present destination position (p2(i)) that is the same as the previous destination position (p2(i-1)), where i > 1, is made from a navigation device (200), a present assistance route (R(i)) is searched that starts from a position (p1(i)) that is on the previous assistance route (R(i-1)) and apart from the user position (p0(i)) included in the request (Req(i)) by a specified distance or more. |
