Current route information about a traffic situation and/or the state of the route itself is made available. A communication link to a peer-to-peer network is set up by a communication device of a motor vehicle, and the motor vehicle is signed on to said peer-to-peer network as a subscriber of the peer-to-peer network, with the result that a communication address of the motor vehicle can be determined by at least one other subscriber of the peer-to-peer network. Furthermore, in each case an interrogation relating to the route information is received by the communication device from the at least one other subscriber. The route information itself is determined by a sensing device of the motor vehicle and is then transmitted to the interrogating subscriber by the communication device.