As someone who has extricated dead children from vehicles at crash sites I say let them have their memorials. Unfortunately there are way too many of them on the road to my house. The one positive of it is that it reminds people that it is a dangerous road. I constantly point them out to my kids and remind them that each one has a common theme-THEY WERE GOING TOO FAST. The flowers tend to look shabby rather quickly, and I always hate to see a ragged flag unlit at night. One mother put a birdhouse on the oak tree that her son ran into and I thought that was a nice memorial.