Mannesmann Aktiengesellschaft

Christian Hort

Stefan Vieweg

Werner Schulz

Josef Heimann

Christian Berwanger

Ralf Kriesinger

Thomas Weber

Optimized, universal transmission of traffic information and the coding thereof by different terminals is permitted in a simple, inexpensive and efficient manner by apparatuses and a method for transmitting traffic information relating to a road traffic network from a traffic information control center to at least one terminal. In the control center, the segments of the road traffic network which are affected by the traffic information are either coded using a location coordinate table, available in the control center, in a form which represents the location of the segments, or are coded using a segment table, available in the control center, in a form which represents the identity of the segments without their location. The control center transmits to the terminal a selection information item which indicates which of the two above codings is used in the transmitted information.

Binary transmission system

A method of updating digital road maps which are used in traffic direction and guiding vehicles to their destinations. In the method actual route data is determined, stored and transmitted to a traffic computer by at least one test vehicle provided for the purpose. The traffic computer evaluates the information items contained in the route data and assigns them as attributes to the corresponding road sections of a digital road map. At least the actual geographical position of the test vehicle is automatically continually determined as route data and the attributes of the corresponding road sections of the road map are updated by reference to the route data. The attributes include at least the permissibility of driving over the road sections in at least one direction.

Method and system for updating digital road maps

Growing community of inventors

Düsseldorf, Germany

Christian Hort