The man was seriously injured but survived after he was hit by the train near the Upper Montclair station at Bellevue Avenue around 4:35 p.m., NJ Transit spokesman Paul Milo said.
Montclair-Boonton Line service was temporarily suspended but resumed with 45-minute delays shortly after.
None of the approximately 15 customers and crew members on board the train were injured, Milo said.
NJ Transit police are investigating.
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