What action should a crane operator take upon seeing a warning signal?

When a crane operator sees a warning signal, the appropriate response is to stop all operations immediately. This action is critical for maintaining safety on the job site. Warning signals are typically used to indicate potential hazards or unsafe conditions that could pose a risk to personnel, equipment, or the load being lifted. By halting operations right away, the operator can mitigate risks, assess the situation, and determine the necessary steps to address the issue at hand. Stopping ensures that no additional risk is introduced while evaluating the cause of the warning signal and taking corrective action. This approach prioritizes the safety of all individuals on site and protects the equipment from damage.