Tuesday's fiery crash is the latest in a string of accidents plauging the MTA rail line.
The agency has developed new systems for training workers, inspecting tracks and reducing train speeds.
William Rockefeller had an over-the-counter drug in his system that causes drowsiness, a report found.
The MTA planned to provide near full service on the Hudson Line, with scattered delays.
Gov. Andrew Cuomo said he believes excess speed caused seven cars of a Metro-North train to derail.
Get Our Daily New York City Newsletter
Thank you for signing up!
Would you like to sign up for additional newsletters?
Thank you for signing up for additional newsletters.