Navigation device, data structure, and route search and display method

摘要

A navigation device and route search and display method acquire a route search date and route search time and specify a search determination factor based on the route search date. The device and method acquire traffic information corresponding to the specified search determination factor and the route search time and search for a recommended guidance route based on the acquired traffic information. The device and method determine a search display factor based on the route search date and displaying the recommended guidance route and search display factor. A data structure stores search determination factors.