315. The owner must ensure that the operator is familiar with the operation and safety measures of an amusement ride or device before operating it. The operator must be knowledgeable about(1) the location and use of safety devices;
(2) the loading and unloading procedure;
(3) the signals used;
(4) the evacuation procedure;
(5) the location of emergency and first-aid services or of the means of communication with those services;
(6) how to use portable fire extinguishers; and
(7) the operating instructions.