ABOUT THIS INVESTIGATION | On Monday, June 22, 2009, a Red Line sensor failure caused a Metrorail train to crash into a stationary train between Ft. Totten and Takoma stations. Nine people died. Post reporters have found that oversight agencies have little authority over Metro, that prior to the accident Metro had experienced similar equipment malfunctions but had limited independent safety inspectors' access, and that after the accident procedural changes were made solely to improve Metro's image.
Firefighters and Emergency Services personnel work on the accident scene. (Hans Charles / The Washington Post)