Edison Police are looking into the official cause of a crash that seriously injured a woman on Route 1 Monday morning.
According to police, the unidentified woman was a passenger inside a Honda Civic when the driver reportedly fell asleep while operating the vehicle.
Edison Police said the car rear-ended a tractor-trailer which then slammed into a fire hydrant before resting on a curb.
Police said the tractor-trailer had been stopped for a red light near the Edison Town Center around 1:20 a.m. and was pulling away for the green signal when it was hit by the Honda driven by a 30-year-old Cliffwood man.
According to police, the passenger, a 26-year-old Howell woman, suffered broken ribs and internal injuries.
She was undergoing surgery this morning at an area hospital, according to police.
The driver of the truck, a 68-year-old man from Perth Amboy, was not injured.
No charges have been filed in the crash.