| 摘要 |
A navigation system includes a CD-ROM (6, 12) for storing operational schedule data (12) of transportation means operating along railroad, road and air routes contained in a map to be displayed on a screen of the system, and a display (10) for reading the operational schedule data from the CD-ROM (12) and displaying the read operational schedule data on the screen. By addition of a few elements to a conventional navigation system, a navigation system with new functions and improved cost performance is obtained. <IMAGE> |
