According to ASME B30.5, special signals cannot conflict with what?

The correct response is based on ASME B30.5, which sets specific guidelines for crane and hoisting operations. Special signals are developed to communicate unique instructions during lifting or rigging operations that deviate from standard practices. It's important that these special signals do not conflict with standard signals because doing so could create confusion and lead to safety hazards.

Standard signals are widely recognized and used throughout the industry to maintain clear communication between a signal person and the equipment operator. If special signals were allowed to contradict these established signals, it could result in misinterpretation during operations, increasing the risk of accidents.

In contrast, while emergency signals, common voice commands, and operator requests are essential for overall safety and communication, they do not hold the same foundational role as standard signals. Therefore, ensuring that special signals are in harmony with standard signals is paramount for maintaining clarity and safety in operations.