RaritanTownship police responding to a report of a man dressed in dark-colored clothing who was walking on Route 202 arrived too late to prevent him from being hit Wednesday night.
At 8:12 p.m., Hunterdon County 9-1-1Communications received a report about the man walking south in the road.
When police arrived on the scene, the victim, 43-year-old Bienvenu Rwagasore of Flemington, had been hit by a vehicle operated by 76-year-old J. Robert Hillier of Princeton.
Rwagasore was transported by New Jersey state police helicopter to Robert Wood Johnson Hospital in New Brunswick, where he is in serious but stable condition.
"The driver of the motor vehicle involved in the accident has not been issued a summons at this time," said Hunterdon County Prosecutor Anthony P. Kearns III, who added the investigation is ongoing to determine what happened.
He said it is being investigated by his office's fatal accident collision team and Raritan Township police.