| 摘要 |
PROBLEM TO BE SOLVED: To improve the convenience of a toll road etc., by automatically displaying a traffic charge at the point of a present traveling time at an exit etc., of the toll road etc. SOLUTION: When a vehicle mounting an IC card 11 passes through the entrance (a point A) of the toll road and arrives at its exit (a point B), the traffic charge is calculated through the radio transmission and reception of data between with automatic charging devices 12a and 12b. A processor 13 executes subtracting processing from a traffic charge stored in the IC card 11 by radio transmission and reception through the automatic charging device 12. In this case, from the traveling position (two-dimensional latitude and longitude) of its own vehicle measured by a GPS receiver 18, the traffic charge of the toll road at each exit of the toll road in a picture-displayed map is outputted to LCD 21a to display at the lower part of its picture. |
