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From the Daily Journal · Updated

Hurt on a ride at a theme park or fair in California: who is responsible?

The high duty of care ride operators owe, which bumps are part of the ride, and what changes when the ride belongs to a traveling carnival or the fair is run by a public agency.

Reza Torkzadeh
By Reza Torkzadeh and Allen P. WilkinsonBased on a Daily Journal column, Apr. 18, 2024 · Updated September 2026 · 2 min read
Key points
  • Operators of rides like roller coasters must use the utmost care for riders' safety.
  • Some bumps are part of the ride. The question is whether the injury came from a risk the ride should not have had.
  • The ride company, the fair and the manufacturer can each be responsible.
  • Many fairgrounds are run by public agencies, and claims against them have short deadlines.

Every year, millions of people ride roller coasters, water slides and carnival rides at theme parks, water parks and county fairs. Almost all of them go home safe. When a ride injures someone, the park or the carnival usually says the same thing: riders accept the risk. California law does not accept that answer for every injury. This article explains who can be responsible and what makes these cases different.

Theme parks and traveling carnivals

Permanent parks run the same rides every day with their own maintenance crews. Traveling carnivals bring portable rides to fairs and festivals, set them up in a few days and take them down again. Both must keep their rides safe, and California inspects both kinds of rides. With a traveling carnival, several businesses may be involved: the ride company, the fair that hired it, and the company that built the ride.

A high duty of care on the ride

California’s highest court has held that the operator of a ride like a roller coaster owes riders the same high duty of care that a bus or train company owes its passengers: the utmost care for their safety. Riders give up control once the restraint closes. The operator is responsible for the restraints, the maintenance, the operators it trains and the rules it enforces.

Some bumps are part of the ride

Not every injury on a ride is a case. The same court held that being bumped in a bumper car is part of the activity. The question is whether the injury came from a risk the ride should not have had, such as a failed restraint, a mechanical failure, an operator error or a missing warning, or from a risk that is part of the ride itself.

The ride can be a defective product

When a ride or a water slide is badly designed or built, the manufacturer can be responsible, together with the park. These claims need engineers and the ride’s own records.

Fairs run by public agencies

Many California fairgrounds are run by state or local public agencies. A claim against a public agency usually must start with a written government claim, and the deadline is short. Read more about claims against a government agency.

What to do after a ride injury

  • Report the injury to staff before you leave, and ask for a copy of the incident report.
  • Photograph the ride, the seat and restraint, any signs, and your injuries.
  • Get the names of witnesses and the ride operator.
  • Keep your ticket, wristband and receipts, and see a doctor.
  • Call early. Rides get repaired, and a carnival can leave town in days.

Read more about our amusement park, theme park and water park cases.

About this article. Based on "Liability of amusement parks and traveling carnival rides" by Reza Torkzadeh and Allen P. Wilkinson, Daily Journal, Apr. 18, 2024. Used with permission. Read the original (a subscription may be required).Reviewed by Tracy Horn, September 2026.General information, not legal advice about your case.
Reza Torkzadeh
Reza TorkzadehFounder and CEO of TORKLAW. Author of The Lawyer as CEO and 35 articles in the Daily Journal and Advocate magazine on injury law, insurance and the legal profession.Full bioAll publications
More of Reza's published writing

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