At around 11pm on Tuesday 23 July 2013, the woman was travelling south on the A19 approaching the South Kilvington turn-off.
The woman’s white Nissan Juke then left the carriageway and collided with a road sign and a tree, resulting in her sustaining back and jaw injuries.
The woman, who is from the Stockton area, was taken to James Cook Hospital in Middlesbrough by road ambulance.
Police are appealing for anyone who was travelling in the area at the time and saw the White Nissan prior to the collision or 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 Thirsk Roads Policing Group.
The road was closed while emergency services dealt with the collision.