A pensioner died from multiple injuries sustained in a car crash in Gainsborough, an inquest heard.
Marjorie Hill, 83, from Retford, was a front seat passenger in a Vauxhall Zafira travelling back from a day out in Cleethorpes with her daughter, Sandra Westhorpe, and son-in-law, David Westhorpe.
Mr Westhorpe was driving and the three passengers were engaged in conversation when the vehicle left the carriageway on the bend joining Thorndike Way and Corringham Road.
The accident happened at around 7.15pm on December 27, last year.
The inquest into the death of Marjorie Hill was held on September 11, at The Cathedral Centre, Lincoln.
The inquest heard Mr Westhorpe had not noticed the advance warning signs and fluorescent chevrons, warning of a bend, and the car left the road, flipping several times before coming to rest on its roof in an adjacent field.
West Lincolnshire Deputy Coroner Paul Smith recorded a verdict of accidental death.
He said: "Police inquiries raised a possibility Mr Westhorpe had a medical problem or fell asleep at the wheel but there is no objective evidence of this.
"It is apparent the vehicle left the carriageway and overturned. The reason for the loss of control is less clear.
"This was no more than a tragic accident."