| 摘要 |
PROBLEM TO BE SOLVED: To discriminate the congestion information for every up and down line even on the road displayed by a line by designating the display pattern showing the congestion direction according to the congestion direction information on the road which is received from a base station, periodically changing the display state of the display pattern and displaying the congestion direction on the road. SOLUTION: When the congestion direction information of a link (road) K is bi-direction, a bi-directional pattern is designated to a VRAM 27 via a display control part 25. When the display direction of the link A and the congestion direction information are matched, a forward direction pattern is designated to the VRAM 27. Further, the display direction of the link A and the congestion direction information of a link X are not matched, a reverse direction pattern is designated to the VRAM 27. Next, display pitch is determined to a VRAM 25 according to the congestion degree information via the display control part 25. Next, the display pattern and the display pitch determined on the link A which is already displayed on a display part 29 are superimposed and are displayed. |
