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The invention relates to a method for exchanging data in a communication system comprising a number of communication subscribers who exchange data with at least one data source.

The invention relates to a method for wrong-way driver detection. The device is receiving signals of other road users. Those signals are processed to identify wrong-way driving of any road user. Alerts can be signaled to the driver, semi- or fully autonomous vehicle and distributed to any other road user.

For mobile access to a stationary data network, a substantially location-dependent transmission bandwidth is provided by a wireless interface. The aim of the invention is to avoid movement-related limitations during the data transmission in a mobile terminal.