Ryan Horton died after his motorbike crossed the central reservation and hit a car near HMP Long Lartin, a fatal crash that Worcester Coroner's Court heard on Thursday had unfolded in seconds. Senior coroner David Reid ruled that the 29-year-old died from multiple injuries after the road traffic collision on Sheenhill Road near Honeybourne.

The reason the case is drawing attention now is that the inquest set out, in detail, how the crash happened and who tried to help before the ambulance arrived. Judith Coles, the driver of the car Horton struck after she had just left work at HMP Long Lartin on October 31 last year, told the court she saw a silhouette while driving on the correct side of the road and had no time to react.

West Midlands Ambulance Service was called at 7.02pm after Coles waved down a passing vehicle, and an ambulance arrived at 7.30pm. Before then, two nurses from Long Lartin Prison joined the efforts to save Horton's life. He was pronounced dead at the scene.

That sequence was supported by police evidence recovered later. West Mercia Police retrieved footage from a camera on Horton's bike two days later, and a report said the motorbike appeared to slow slightly while in the incorrect lane moments before the crash. The weather was clear and damp, and the road surface was in good condition. The report concluded that the rider of the Honda had failed to correctly negotiate the curve on Sheenhill Road.

Coles's account left one point unresolved at the edge of the findings. She said the collision happened in a split second and that she had no time to react, while the police report said the motorbike appeared to be in the incorrect lane moments before impact. Horton, born on June 25 1996 in Redditch, had osteogenesis imperfecta and asthma but no significant medical history, and toxicology found no traces of alcohol or drugs in his system. What caused him to cross the central reservation on that bend remains unanswered, even as the inquest fixed the final moments of the crash.