An engineer who suffered serious head injuries while riding on a miniature train died from misadventure, an inquest jury has ruled.
Hugh Dow, 56, was killed when the train entered a tunnel at Gulliver's theme park in Milton Keynes, Buckinghamshire.
Mr Dow, from Newport Pagnell, Buckinghamshire, was standing when his head hit a bridge on 10 May this year.
A jury at the inquest held in Milton Keynes returned a verdict of misadventure.
Mr Dow was working in an area not open to the public when the accident happened.
On the day of the accident, Mr Dow had stopped the train after noting there was a faulty door.
He fixed it and gave the driver the thumbs up to move on.
Mr Dow suffered severe skull and brain injuries as he was dragged through the 10ft-long tunnel.
Pathologist Dr Sam Jalloh said he had suffered massive injuries and would have died instantly.
Gulliver's Land director Duncan Phillips said that it was not part of Mr Dow's job to ride on the coupling.
He said that since the accident a policy had been written down and warning notices had been placed on the coupling bars.
Health and Safety Inspector Matthew Lee said after the hearing Mr Lee said a report into the accident would be finished by early next year.
A decision would then be made on any prosecutions against the company under the Health and Safety at Work Act.