A method to operate a road-side network node in a cell-supported radio communications network and in an adhoc radio communications network is provided. The method includes providing data to be transmitted; and determining a transmission instruction for the data, the transmission instruction including a channel selection indicating a) a transmission of the data via a sidelink radio channel of the cell-supported radio communications network, b) a transmission of the data via an adhoc radio channel of the adhoc radio communications network, or c) a transmission of the data via the sidelink radio channel and the adhoc radio channel. The method also includes initiating a transmission of the data via the sidelink radio channel and/or via the adhoc radio channel according to the transmission instruction.