A lack of adequate testing for a pernicious sleep disorder was the primary cause of two serious train crashes in New Jersey and New York, federal investigators concluded in a report Tuesday as they renewed the call for the testing to be mandatory.
The crashes involving a New Jersey Transit train at the Hoboken terminal in September 2016 and a Long Island Rail Road train in Brooklyn in January 2017 killed one person, injured more than 200 and caused more than $11 million in damage.
