Accidents in theme parks and fair grounds are rare.
All fairground rides are inspected by specially trained safety experts at least once a year.
They also have random on-the-spot checks by independent examiners - people who don't work at the fair or park - who check rides without warning owners they're on their way.
These examinations are very thorough and can take anywhere between six and 14 hours.
People who own and operate rides also carry out checks daily before starting the rides up.
These tests can take around two hours and include looking for anything unusual, brake testing, oil and cable testing and harness checks.
Ride operators also have to have a special licence to be able to operate a fairground ride.
The people who run the rides also have to have had special training before they're allowed to work on them.