Road sign collectors do know that undercurrents in society become visible in common road signs (see many pages at this site). Personally I'm not looking forward to a future where people become featureless and undistinguishable from each other and must fight to keep their head and where even heaps of earthen must conform to the uni-shape. Still, that's the way it goes. Several parts of former Yugoslavia now stick to the same roadsigns (see Croatia, Slovenia). Shouldn't we turn to stamps after all?