California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 4 - General Mobile Equipment and Auxiliaries
Article 35 - Amusement Rides
Section 3905 - Speed Limiting Devices

An amusement ride capable of exceeding its maximum safe operating speed shall be provided with a maximum speed limiting device. All governors having an adjustable speed setting shall be sealed so that the adjustment cannot be changed without breaking the seal. If the seal is broken, the governor shall be readjusted and resealed by the ride foreman prior to replacing the ride in service.