The lift director is described by ASME as the party that directly oversees the work being performed by the crane and the associated rigging crew. According to
Safety · Addressing the crew and operator's safety concerns before initializing the operation · Halting any crane operations if notified of a hazardous situation
The American Society of Mechanical Engineers (ASME) volume B30.5 (mobile cranes) and the Occupational Safety and Health Administration (OSHA) have various