A driver who flashed her lights as a warning that a man had fallen into the road accidentally blinded another motorist who then ran over and killed the pedestrian, an inquest heard.
Keith Wrightson, 62, was walking home with his son from a football match when he tripped and fell into the road.
Danielle Fardoe flashed her lights to warn oncoming drivers he was in the road, as Mr Wrightson's son tried to stop traffic by frantically waving and shouting.
Fellow motorist Vignesh Chandrasekar was blinded by the lights and hit Mr Wrightson, who died from chest injuries in front of his distraught son, Luke.
The inquest heard Mr Chandrasekar was likely to have been affected by 'disability glare', a - caused by bright oncoming headlights.

Luke, 33, told the coroner he and his father had been with friends and relatives watching Scarborough Athletic, visiting pubs in Scarborough before and after the game, reports MailOnline.
He said: "I saw lights and noticed a car coming and at this point I was not overly concerned. I was aware the danger was there and thought I would signal the car, waving my arms as it approached.
"I realised the car was not going to stop. I started panicking, shouting 'stop' among other things but it became clear to me that it was too late and I had to get out of the way.
"At the last minute I dived towards the pavement and the grass. I'm not sure but I think my trailing leg was caught by the car."
A forensic pathologist told the hearing she believed Mr Wrightson was killed outright by the impact of the collision.
Mr Chandrasekar told the inquest Ms Fardoe flashed his lights once, before "frantically" flashing them.
He went on to say he was "puzzled" at what was happening and began checking the controls of his own vehicle to check his own lights were not on full beam.
He also explained how he thought the flashing lights may have been a prank or an attempt to create a fraudulent insurance claim.
Mr Chandrasekar said he did not see Luke waving his arms to stop drivers.
Assistant coroner John Broadbridge adjourned the hearing until December 6 when it is expected to conclude.