DC Metro heralds approval of completed NTSB safety recommendations

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The recommendations Metro said were satisfactorily addressed included removing a series of railway signals that the NTSB found were susceptible to defection and improving the analysis of data collected from train tracks.

Metro has run trains manually as it addressed the NTSB's recommendations about its automatic control system.

The agency said it has submitted 12 more of the NTSB's recommendations for closure, but the safety agency has not finished reviewing documents related to those.

One of the NTSB's main recommendations following the 2009 crash of a train on Metro's Red Line that killed nine people was the removal of the oldest rail cars in the WMATA system. Metro said Thursday that it would take more time to address that recommendation because the cars were being replaced by new models being constructed in Japan for the opening of the system's extension to Dulles International Airport. 

-This post was updated from an earlier version to correct the number of recommendations Metro has addressed.