WASHINGTON - FEBRUARY 13: A sign that reads "Security Alert" is on display as Metro Rail riders depart a subway station February 13, 2003 in Washington, DC. Last week, U.S. Secretary of Homeland Security Tom Ridge increased the level of alert from yellow to orange because of intelligence that suggested a growing threat from Osama bin Laden's terrorist network. (Photo by Mark Wilson/Getty Images)
A train operator and a Metro employee in charge of rail yard movements “violated standard operating procedure,” resulting in the derailment of a Red Line train at the Brentwood rail yard on March 10, Metro officials said.
The train was being moved inside the yard when the operator apparently ran a red signal, according to Metro’s initial reports. The front two wheels of the four-car train derailed, causing damage to the track and third rail. No one was injured and no passengers were aboard.