A town in Germany is trying to reduce accidents by removing all traffic signals, lights, etc: http://www.reuters.com/article/newsOne/idUSGOR14512420070911
How does this reduce accidents?
I'm not saying I know anything at all about this... just, it defies common sense.
(not that I have so much of that, now that I think about it...) :)
edited to add the Wikipedia link that explains the theory - not that it helps me understand it much... http://en.wikipedia.org/wiki/Shared_space