The man was struck just by the Pascack Valley Line train carrying a dozen or so people at Broadway and Irvington Street just after 1:30 a.m., responders said.
The scene was cleared and service resumed Woodcliff Lake and Spring Valley at 5:45 a.m., they said.
Westwood, Emerson, Hillsdale and NJ Transit police responded, along with the Bergen County Sheriff's Bureau of Criminal Identification, which collected evidence.
NJT police were handling the investigation.
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