Process and device for obtaining traffic situation data

(57) Summary book invention is a method for collecting the data about the traffic situation in a road network, From the vehicles ("floating car") of a large number which equipped the sensor mechanism for collecting important sensor data on the traffic containing at least one quantity (the amount of speed) showing the actual speed v (t) of each vehicles, and have participated in road traffic, The individual message about the actual traffic situation of the circumference of vehicles detected by the data processing equipment arranged in each vehicles based on the collected sensor data keeps a time interval, and is related with what came to be transmitted to a center on radio. Besides the classification interpretation of the traffic situation which includes a classification "obstacle resulting from traffic" (traffic congestion) at least performed by data processing equipment based on the collected amount of speed, The individual message contains as a component the confidence coefficient F showing the measure of the amount of speed during the time when the individual message is related, respectively, especially the wave of time distribution of speed v (t) 、, respectively.