| 摘要 |
A navigation device includes a display screen, a storage unit and a processing unit. The storage unit stores a map database. The map database includes electronic map data, and a plurality of road information each including a road name and a corresponding road speed-limit. The processing unit is operable to access a portion of the electronic map data in the map database, to access the road information corresponding to at least one road of the electronic map data accessed by the processing unit, to render the electronic map data accessed thereby so as to generate an electronic map image in which the at least one road of the electronic map data accessed by the processing unit has a visible indication that corresponds to the road speed-limit of the road information accessed by the processing unit, and to provide the electronic map image to the display screen for display. |
