Police are appealing for witnesses following a collision in which a seven year-old girl sustained serious injuries.
The collision occurred at 10:37pm on Saturday 11 January 2014, on the northbound carriageway of the A1, approximately half a mile north of Barton village near the border with County Durham.
It involved a black Vauxhall Tigra which collided with the central barrier before coming to rest in the carriageway. It was then hit by a black Peugeot 407 travelling in the same direction.
The driver of the Vauxhall Tigra, a woman in her 20s from the Sunderland area, sustained serious injuries and was taken to James Cook Hospital in Middlesbrough where she remains in a serious condition.
A seven-year-old girl travelling in the Peugeot sustained serious head injuries and was taken to James Cook Hospital where she remains in a critical condition.
The driver and front seat passenger of the Peugeot, a man and a woman in their forties sustained minor injuries and two other children were uninjured. All occupants of the Peugeot are from Watford.
Police are appealing for anyone who saw either vehicles travelling northbound on the A1 prior to the collision and to anyone who witnessed the actual collision, to contact them.
Anyone with any information is asked to contact North Yorkshire Police on 101, select option 2 and ask for PC Neil Cholmondeley (pronounced Chumley) or email email@example.com
The road was closed to allow officers to examine the scene of the collision and was reopened at 6:45am the following morning.