the bottom component 7 due to the angles of the mating sidewalls 17 and 10 a of the two coupling components 7 8 forcing the connecting bolt 9 to reach a condition of over tension resulting in the rupture of the bolt in other words as a lateral or sideways force is exerted on the signpost the angle of the sidewalls 10 a 17 causes the top component 8 to exert a substantially upward axial force on the connecting bolt 9 although some lateral or shearing forces may also be encountered depending on the angle of the sidewalls with sufficient force on the signpost the machine screw 9 will be forced to rupture after reaching its yield strength and result in the separation of the top component from the bottom component as shown further in these figures the signpost may be put back in its original position by merely placing the top component 8 back onto the bottom component 7 and replacing the broken machine screw 9 with a new one which is the only material that is required to re assemble the signpost thus restoring the traffic signs signals lights warnings or markers to a fully functional condition it is noted that a length of safety line 20 should prevent the signpost and top component 8 from being thrown too far from its base 6 fig7 a and 7 b show an alternate.