Which regulation governs the safe operation of heavy machinery?

The regulation that governs the safe operation of heavy machinery is the Occupational Safety and Health Administration (OSHA) regulations. OSHA's primary responsibility is to ensure workplace safety and health in the United States. This includes establishing guidelines and standards for the safe operation of various types of equipment, including heavy machinery. They set forth requirements that operators must follow to minimize risks and prevent accidents in the workplace, such as proper training, maintenance, and safety procedures.

Other agencies like the Environmental Protection Agency (EPA) focus on environmental protection and regulations related to pollution control, which do not specifically cover the safety operations of heavy machinery. The Federal Aviation Administration (FAA) regulates civil aviation safety and does not pertain to ground-based machinery, while the National Transportation Safety Board (NTSB) investigates transportation accidents and may make recommendations, but it does not set regulations for operating machinery. Therefore, OSHA directly addresses the safe operation of heavy machinery.