More About Washington DC Metro Crash – Equipment Failure?

Nine are now confirmed dead after the Washington Metro train collision.

Two stories now speculate about the failure of circuits to detect the train that was approaching the other train stopped at the station. To read more, see:

http://abcnews.go.com/News/story?id=7927243&page=1

http://www.chron.com/disp/story.mpl/ap/top/all/6498184.html