The New England Highway has reopened after a two car crash near Singleton that has left a child and a woman fighting for life in hospital.
Emergency services were called to the highway 500 metres north the Range Road intersection, 3 kilometres south of Singleton just after 11:15am following reports of a head-on crash between a car and a 4WD.
Two rescue helicopters, a Westpac Rescue Helicopter and a CareFlight helicopter as well as eleven NSW Ambulance paramedics attended the scene.
The female driver of the car and a child passenger suffered critical injuries - the Westpac Rescue Helicopter transported the 6 year-old-boy to John Hunter Hospital suffering multiple injuries and he is in a serious condition.
Two other children are also being treated for non-life-threatening injuries.
The male driver and sole occupant of the 4WD has been taken to John Hunter Hospital with non-life-threatening injuries.
Meantime there's traffic choas in the area.
Traffic is now getting through on the New England Highway at Whittingham but there were also holdups between Ravensworth and the Lemington Road turn off.
Motorists are advised to allow plenty of extra travel time and exercise caution as emergency services and traffic crews are still working by the side of the road.
The speed limit has been reduced to 40 kilometres an hour past the crash site.
Image credit: Lauren Kemp, NBN News