NTSB: Failure of train signal led to D.C. Metro crash

District of Columbia Fire and Emergency workers at the site of a rush-hour collision between two Metro transit trains in northeast Washington, D.C. Monday, June 22, 2009. (AP Photo/Pablo Martinez Monsivais)

July 27, 2010 1:14:55 PM PDT
A faulty electronic circuit that caused a deadly 2009 Metro crash in Washington was symptomatic of an "anemic safety culture" at the D.C. area's transit agency, the National Transportation Safety Board said Tuesday.

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