It sounds like NYC is following the kind of policy that some of our British politicians would like to introduce. After all, in traffic the rules of physics are reversed and small, light, slow-moving objects represent a far bigger danger than big, fast-moving ones. I give examples of this wise thinking here: http://invisiblevisibleman.blogspot.com/2012/01/minister-who-made-invisible-visible-man.html
Brooklyn Spoke 
It sounds like NYC is following the kind of policy that some of our British politicians would like to introduce. After all, in traffic the rules of physics are reversed and small, light, slow-moving objects represent a far bigger danger than big, fast-moving ones. I give examples of this wise thinking here: http://invisiblevisibleman.blogspot.com/2012/01/minister-who-made-invisible-visible-man.html