A method for transmitting data (D1, D5) between a trailer and a road user in a vehicle environment, the data (D1, D5) being transmitted with low latency via a wireless V2X data link between a trailer communication module of the trailer and a user communication module of the road user in accordance with a V2X standard (V2XS), the wireless data link being formed directly between the trailer communication module and the particular user communication module or indirectly via a distribution station, the distribution station directly forwarding the transmitted data (D1, D5), the trailer communication module independently selecting and activating an operating mode depending on the particular road user, and, depending on the activated operating mode, - trailer data relating to the trailer being selected and independently sent via the wireless V2X data link in accordance with the V2X standard (V2XS), and/or - user data provided by road users and relating to the road users being independently received and processed in accordance with the V2X standard (V2XS), characterized in that the trailer communication module is operated in a coupling mode when the trailer communication module plausibly determines, on the basis of towing vehicle data (D5a) output by a towing vehicle via the wireless V2X data link, that the trailer is coupled to at least one towing vehicle associated with the trailer, and/or plausibly determines, on the basis of additional trailer data (D5d) output by an additional trailer via the wireless V2X data link, that the trailer is coupled (St2a) to at least one additional trailer associated with the trailer, the trailer communication module independently selecting and/or adapting the trailer data in the coupling mode and outputting them to the vehicle environment for reception by other road users, with trailer data to be output in this regard being compared and/or checked for plausibility with the towing vehicle data (D5a) and/or the additional trailer data (D5d), and contradictory trailer data not being transmitted. the trailer communication module independently selecting and activating an operating mode depending on the particular road user, and, depending on the activated operating mode, - trailer data relating to the trailer being selected and independently sent via the wireless V2X data link in accordance with the V2X standard (V2XS), and/or - user data provided by road users and relating to the road users being independently received and processed in accordance with the V2X standard (V2XS), characterized in that the trailer communication module is operated in a coupling mode when the trailer communication module plausibly determines, on the basis of towing vehicle data (D5a) output by a towing vehicle via the wireless V2X data link, that the trailer is coupled to at least one towing vehicle associated with the trailer, - trailer data relating to the trailer being selected and independently sent via the wireless V2X data link in accordance with the V2X standard (V2XS), and/or - user data provided by road users and relating to the road users being independently received and processed in accordance with the V2X standard (V2XS), characterized in that the trailer communication module is operated in a coupling mode when the trailer communication module plausibly determines, on the basis of towing vehicle data (D5a) output by a towing vehicle via the wireless V2X data link, that the trailer is coupled to at least one towing vehicle associated with the trailer, and/or plausibly determines, on the basis of additional trailer data (D5d) output by an additional trailer via the wireless V2X data link, that the trailer is coupled (St2a) to at least one additional trailer associated with the trailer, the trailer communication module independently selecting and/or adapting the trailer data in the coupling mode and outputting them to the vehicle environment for reception by other road users, with trailer data to be output in this regard being compared and/or checked for plausibility with the towing vehicle data (D5a) and/or the additional trailer data (D5d), and contradictory trailer data not being transmitted.