| 摘要 |
Navigation systems for drivers and other travelers may preferably include search criteria definition means (14, 16, 31, 61, 71, 74) for defining a first search criterion concerning a travel route and a second search criterion concerning a travel time period. Search means (14, 31, 61, 62, 71) may be provided for searching, or initiating a search of, a route according to the first search criterion and the second search criterion. Further, storing means (14, 31, 61, 71) may be provided for storing route guidance data concerning a searched route in a storage medium (16, 74). Such navigation systems enable the driver/user to travel along an optimal route in accordance with the route guidance data, e.g., even if an originally scheduled travel time period is suddenly changed. |
