While officers were dealing with this incident, a 26-year-old man from York was arrested at 8.55am on suspicion of dangerous driving. It is alleged that he drove a white Seat Ibiza car through road closures at Buttersyke Bar, Huby and the collision scene itself.
He is being questioned in custody.
Witnesses or anyone with information that could assist the investigation should contact North Yorkshire Police on 101, selection option 2, and ask for Andrew Morton.
Police have remined motorists to abide by road closures at all times.
A police spokesperson said:
They are put in place for safety reasons, both for other road users and for the emergency services who are working at collision scenes.
It is also vitally important that the police can gather all the available evidence from collision scenes without any interference. This evidence is then used to support court cases to bring offenders to justice and also to explain the circumstances of how people died in fatal collisions at inquest hearings.
We understand that people can become frustrated when road closures cause delays, and our officers and highways staff work hard to get traffic moving again. But if people ignore road closures and potentially put themselves and others in danger, the police and the courts will take firm action.