A net/fence includes retro-reflective elements such as tapes that extend in horizontal and/or vertical directions with respect to the fence. The tapes are attached to the netting by thread or glue. One method for weaving the net/fence includes dragging the tape extending in a machine direction along the netting during weaving and threading the tape thereto. Another method for weaving the net/fence includes dragging the tape extending in a transverse direction and attaching the tape thereto with glue. A net-weaving machine can produce such a net in a machine direction and use a comb having threading needles to selectively attach the tape to the net with the thread. If attached in the transverse direction, a trolley borne on a beam lying in the transverse direction introduces the tape onto the net and a connection device, such as a glue jet, connects the tape to the net.