PLUG-IN CONNECTOR FOR TRANSMITTING DATA BETWEEN COUPLED VEHICLES, AND SYSTEM AND VEHICLE THEREWITH

A plug-in connector device for a vehicle for transmitting data includes a first interface for connection to a vehicle and a second interface for connection to a connecting line, wherein the first interface and/or the second interface is/are formed as a connecting element, in particular formed as a plug or a socket, for establishing a connection according to an industry standard. A data interface for connection to a data line is electrically connected to the first interface in order to transmit electrical signals and/or data between the data interface and the second interface. The first interface is electrically connected to the second interface to transmit electrical signals and/or data between the first interface and the second interface. A connecting line is configured for connection to a second interface of the plug-in connector device. A vehicle includes a system having the plug-in connector device, and a vehicle has such a system.