| 摘要 |
PROBLEM TO BE SOLVED: To enable attainment of a screen display easy to see without lessening an information amount, by calculating the information amount of traffic information and by changing the form of display of the traffic information in accordance with the information amount of the traffic information. SOLUTION: A traffic information amount calculating means 102 calculates the total length of a traffic snarl of snarl information, the total number of the snarl information and the area ratio of traffic information in a screen from the real-time traffic information acquired by a traffic information acquiring means 101. A traffic information display form changing means 103 roads out the total length of the snarl, the total number of the traffic information and the area ratio of the traffic information in the screen from the traffic information amount calculating means 102, judges whether each of these times exceeds a threshold value corresponding thereto, and makes a display line width small for each of them when it exceeds the threshold value. In this way, a screen display easy to see can be attained without lessening an abundant information amount. |
