| 摘要 |
Land vehicle navigation apparatus for searching for a route to a destination location and for providing guidance is disclosed which is capable of improving visibility of intersection diagrams thereby enabling a vehicle operator to easily recognize an adequate travel path at a guidance intersection. The apparatus includes a storage device for storage of data representative of intersection diagrams and other data for use in performing route guidance. A display control device is connected for, when displaying onto an intersection diagram, determining the information necessary for route guidance among the data items stored in the storage and for illustrating it while limiting visualization of information other than the truly necessary information items. The display controller permits displaying of an intersection diagram upon detection of an intersection diagram enlargement instruction. A present position detector is connected for detecting a present vehicle location. The display controller provides control for displaying an intersection diagram by detecting an intersection display enlargement instruction only when a present vehicle position detected by the detector comes closer to certain location which is a predefined distance on this side of a guidance intersection. <IMAGE>
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