Crews were on the scene of an accident involving two vehicles and a tractor-trailer in Hopewell Township, Mercer County.
The crash happened around 10:15 a.m. Tuesday on Interstate-95 in the area of Exit 4 (Route 31).
Police say a Cadillac Escalade and a Buick Rendevous collided with the truck.
The driver of the Cadillac was taken to Capital Health Regional Medical Center in Trenton. He suffered with non-life threatening injuries.
There is no word on why the vehicles crashed.