Abstract: The invention relates to a method for dynamically obtaining relevant traffic information and/or for dynamically optimizing a route followed by a first vehicle which belongs to a self-organizing traffic information and/or traffic guidance system to which other vehicles belong as well. Said method consists of the following steps: generating own data by means of vehicle-mounted sensors and/or other information sources in the first vehicle; transmitting data relevant to the first vehicle or other vehicles; receiving data transmitted by other vehicles; storing data obtained from received and/or own data; generating and transmitting requests regarding data which can possibly be provided by other vehicles; and potential relaying received data by retransmitting said data in processed or unprocessed form.

Abstract: In the communication method according to the invention, the user data are passed on iteratively between subscribers (A, B), with the user data communication being the stimulus for second-order communication (explorer communication), by means of which network structure data are determined and/or refreshed. The explorer data are transmitted iteratively on the same or on a different communications infrastructure as the user data, with the data being passed on in unchanged or processed form during transmission. The explorer data contain explicit requests relating to network structure data and can thus actively initiate the process of obtaining network structure data. Suitable communication paths (a, b, c) for passing on user data iteratively are calculated on the basis of the network structure data which are already available locally, in particular on the basis of previous communications processes, or which are obtained by requests.