Luminous road studs; luminous road studs of metal; luminous or mechanical safety signal panels of metal; highway safety cones; luminous safety signals; luminous safety signaling panels; flashing safety lights; safety traffic cones; reflecting discs for wear, for the prevention of traffic accidents; luminous signaling buoys; marking and signaling buoys; signaling lamps; warning triangles; luminous traffic signs of metal; luminous traffic signs of plastic; luminous safety beacons