Patent ID: 6618667
Filing Date: 2003-09-09
Classification: G08G

Abstract:
A process for decoding traffic information pertaining to a highway network transmitted from a traffic information control center to a terminal, comprising the steps of:representing status of at least one segment of the highway network and identity of the segment with the transmitted traffic information; storing segment data in the terminal representing segments included in the traffic information obtained in the transmission, the data being stored in a manner which also represents travel direction in affected lanes of the segments, the terminal also storing status data representing the status of the segments; comparing, in the terminal, the segments represented in current traffic information that are transmitted to the terminal with segments represented in older traffic information previously transmitted to and stored in the terminal before the current traffic information; and concluding that the status data stored with the older traffic information also pertains to the segments included in the current traffic information and preparing these data for output to the terminal upon establishing agreement with respect to identity between two segments of the older traffic information and two of the segments of the current traffic information and also upon establishing agreement with respect to the travel direction in these segments, so that a message can be sent to the terminal which omits details that are filled in by a message of the older traffic information having two segments that match the two segments of the current information thereby reducing a volume of data transmitted.