| 摘要 |
PURPOSE: To find a required time up to a halfway point in an optimum course as much as possible and predict a required time up to a destination by detecting the connection of road sections from a current position in the searched optimum route, adding travel required times of corresponding road sections, and finding the travel required time of the connection part. CONSTITUTION: An FM multiplex broadcast receiver 9, a radio wave beacon receiver 11, and a light beacon receiver 14 when ready to receive traffic information receive the traffic information at any time and update the contents of internal memories with the information together with time data. A control processor 4 selects and uses the traffic information of the latest presented time to search for an optimum course. The control processor 4 detects the connection of road sections regarding the traffic information from the current position in the optimum route according to the information to find the position of the end point of the connection, finds the travel required time of the connection part by adding the required times of the respective road sections, and indicates the travel required time from the current position to the position of the end point of the connection. |
