How annoying are roadside shrines and memorials? How distracting are they? How safe are they? Why should one person's drama be another person's safety risk? Really - move this sort of drama to facebook and get it off the public streets... it doesn't belong there. It's distracting and it's garish... if you can't afford a grave to put all those plastic flowers and molding stuffed animals on, then just do it digitally online but leave the roadside for what it's meant for - traversing with vehicles as safely as possible! It's no place for individualized melodrama. It's a ROADWAY. Enough already!
Here's an example of a roadway that suffered great damage in London in 2005. See any drama in the "after" picture? No - me neither - because the Brits understand GETTING ON WITH THE BUSINESS OF LIVING not a bunch of melodrama. Live and learn!