A road-side gateway network node (NN5; NN6) for operating in a cell-supported radio communications network and for operating in an adhoc radio communications network, the road-side gateway network node (NN5; NN6) comprising a processor, a memory, a first radio module for operating in the cell-supported radio communications network, a second radio module for operating in the adhoc radio communications network, and an at least one antenna, the road-side gateway network node (NN5; NN6) being configured to: - coordinate a use of the second access technology layer depending on a use of the first access technology layer; - coordinate a use of the first access technology layer depending on a use of the second access technology layer; - exchange data with at least a second road-side network node via a sidelink radio channel of the cell-supported radio communications network; - exchange data with at least a third road-side network node via an adhoc radio channel of the adhoc radio communications network, wherein a first access technology layer is used for said exchange of data with at least the second road-side network node, wherein a second access technology layer is used for said exchange of data with at least the third road-side network node, and wherein, in both the cell-supported radio communications network and the adhoc radio communications network, radio signals are transmitted using the same or overlapping unlicensed frequency range (uFR); wherein the exchange of data comprises: - provide data to be transmitted; - determine, locally on the road-side gateway node, a transmission instruction (TI) for the data, the transmission instruction (TI) comprising a channel selection (CS) 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; and - initiate a transmission of the data via the sidelink radio channel and/or via the adhoc radio channel according to the transmission instruction (TI). - coordinate a use of the second access technology layer depending on a use of the first access technology layer; - coordinate a use of the first access technology layer depending on a use of the second access technology layer; - exchange data with at least a second road-side network node via a sidelink radio channel of the cell-supported radio communications network; - exchange data with at least a third road-side network node via an adhoc radio channel of the adhoc radio communications network, wherein a first access technology layer is used for said exchange of data with at least the second road-side network node, wherein a second access technology layer is used for said exchange of data with at least the third road-side network node, and wherein, in both the cell-supported radio communications network and the adhoc radio communications network, radio signals are transmitted using the same or overlapping unlicensed frequency range (uFR); - provide data to be transmitted; - determine, locally on the road-side gateway node, a transmission instruction (TI) for the data, the transmission instruction (TI) comprising a channel selection (CS) 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; and - initiate a transmission of the data via the sidelink radio channel and/or via the adhoc radio channel according to the transmission instruction (TI). <EOS>