294. Amusement rides or devices must be equipped with a device to restrain passengers under all loading and operating conditions planned for the amusement ride or device, in compliance with ASTM Standard ASTM F2291-04, Standard Practice for Design of Amusement Rides and Devices, published by the American Society for Testing and Materials. The restraining device must be of a type that cannot be inadvertently released when the amusement ride is in operation and be inaccessible to passengers.