This clip of two cars hitting each other as they approach a roundabout triggered a heated debate about who's to blame.
In the video, the white hatchback and black saloon cras side-on as they attempt to navigate the roundabout near Sheffield, South Yorkshire.
David Blandy shared the footage online, writing: "Collision on the Viaduct Bridge, Sheffield. Black car or white car to blame?"
The debate is largely about lane discipline, with most people arguing over who should have stayed in their lane.
Some believe the white Mazda 2 was in the lane for the first exit on the roundabout and moved into the path of the Audi.
But others say the Audi changed lanes and was at fault for the accident.
The white Mazda 2 is driving in the left lane at the start of the video, with a black Audi A4 in the centre lane.
As the vehicles approach the roundabout, the white Mazda starts to overtake the Audi and they pass the first exit on the left and hit side-on.
One user said: "How is that Audi's fault. White car changed lane surely."
Another commented: "White car can go left or straight ahead which is what it was doing, black car was obviously attempting to change lanes."
A third added: "My opinion for what its worth, white car at fault. The black has the lane lines the same distance from his near side continuously until impact."