| 摘要 |
PROBLEM TO BE SOLVED: To receive a broadcasting radio on traffic information, storage its reception time, indicate the traffic information on a road map in a form corresponding to the reception time, and indicate a past information in a different form when a newest information cannot be obtained. SOLUTION: A receiver 7 receives a broadcasting radio concerning a traffic information system. After the reception of traffic information by the receiver 7, a controller 1 searches a traffic information which is received in the past and stored in a memory 1b, and checks whether currently received traffic information is the same as the past received one or not. When it is not in the past, it is stored together with its reception time as a pair in the memory 1b. Then, the currently received updated information is displayed in red on a display 8. Further, the traffic informations stored in the memory 1b are searched, and when there is any information that was prepared in the past but is not presented this time, this information is displayed in orange on the road map of the display 8. |
