NAVIGATION DEVICE, ROUTE SEARCHING METHOD, ROUTE SEARCHING PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM

摘要

A deviation determining section (101) determines whether or not a mobile body has deviated from a guidance route to a destination point, and when the deviation determining section (101) determines that the mobile body has deviated from the guidance route before going through a planned go-through point present on the guidance route, a distance calculating section (102) calculates the distance from the point of the deviation to the planned go-through point. Then, a go-through point determining section (103) determines whether or not to go through the go-through point based on a history of the distance calculated by the distance calculating section (102), and a re-searching section (104) re-searches a guidance route based on the result of determination by the go-through point determining section (103).