NTSB Chairman Deborah A.P. Hersman speaks at Metrolink's rail yard in Los Angeles. Metrolink is moving forward with installing Positive Train Control technology to avoid collisions.
Charged with determining the probable cause of transportation accidents and promoting transportation safety, and assisting victims of transportation accidents and their families. more >
NTSB releases the preliminary report regarding the Ellicott City, MD train derailment.