partly funded by the German Ministry of Education and

Driving means constantly changing location. This, in turn, means a constant demand for information on the current location and specifically for data on the surrounding traffic. In particular, there is a demand for sensor data from other cars such as data on braking sent from a preceding car, for data on the traffic flow on a route, and for information about sites located along a route. Although need for information pertaining to the close environment of the car is obvious, so far no intervehicle communications system for data exchange between vehicles and between roadside and vehicles has been put into operation. To promote the development of such an inter-vehicle communication system, the project “FleetNet – Internet on the Road ” was set up by a consortium of six companie