The Ride and How Roller Coasters Are Regulated
For a family, the practical question here is which records exist about the ride and who holds them. That depends on whether the coaster is a fixed-site ride or a mobile one. A fixed-site amusement ride is permanently installed at one location, like a coaster at a permanent park. A mobile or traveling ride is taken down and moved between locations, such as at a fair or carnival. Federal law treats the two differently.
The federal Consumer Product Safety Act covers traveling rides but not permanent ones. Its definition of a consumer product, in 15 U.S.C. § 2052, includes "any mechanical device which carries or conveys passengers along, around, or over a fixed or restricted route or course or within a defined area for the purpose of giving its passengers amusement, which is customarily controlled or directed by an individual who is employed for that purpose and who is not a consumer with respect to such device, and which is not permanently fixed to a site." The same paragraph then says: "Such term does not include such a device which is permanently fixed to a site."
In practice, the Consumer Product Safety Commission's authority reaches mobile rides, while a coaster permanently fixed at a park falls outside that federal definition. Oversight of fixed-site rides, where it exists, comes from state law. Whether a state runs an amusement ride safety program, which agency handles it, how often rides are inspected and what must be reported all differ from state to state. Florida's ride rules are one state's example, covered on the Florida theme park injury page. They are not the national rule.
If you were hurt at a fair, federal records may be part of the picture; if you were hurt at a permanent park, state records usually are. Identifying the overseeing body is often an early step an attorney can help with.