allow them to be hinged inwardly over leg members 12 when the road sign is removed and the support structure is collapsed into a compact packaged form referring to fig6 to 8 of the drawings the road sign structure of this illustrated embodiment is basically similar in function to the embodiment of fig1 to 5 and comprises a pair of elongated angular crossbar members 16 hingedly connected at 17 and comprising substantially horizontally extending bar members 18 having outwardly angled members 19 at the upper ends thereof sockets 20 and 21 are attached as by welding at the ends of the crossbar members 16 between the bar members 18 and the angle members 19 which form locating jaws for a road sign sockets 20 and 21 are of a u shaped configuration closed on the outer side thereof at 22 and open on their inwardly facing sides at 23 two pairs of support legs 24 and 25 are pivotally mounted in sockets 20 and 21 on pins 26 and 27 so as to be movable inwards along crossbar members 16 to a folded demountable nesting configuration of the support structure into a compact minimum package for transporting purposes as shown in fig5 in use the support structure with the leg members 24 and 25 pivoted outwardly and downwardly therefrom is positioned on the ground.