Two people have been killed after being hit by a truck on the M1 at Cameron Park.
Emergency services were called to the freeway near George Booth Drive just after 5:30pm.
The victims are a 28 year old woman and an 8 year old boy.
Police say they're not related but were known to each other.
The driver of the truck, a 57 year old man, was treated for shock and taken to John Hunter Hospital for mandatory blood and urine testing.
The M1 was closed southbound for four hours.