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

The reason the correct answer is that special signals cannot conflict with standard signals is rooted in the need for safety and clarity during crane operations. Standard signals, as outlined in industry standards like ASME B30.5, serve as universally recognized communications between operators and signalers. These signals are designed to be clear and consistent to enhance understanding and reduce the likelihood of accidents.

When special signals are introduced, they should not create confusion or ambiguity. If a special signal were to contradict a standard signal, it could lead to misinterpretation during critical operations, potentially resulting in unsafe conditions or accidents. Therefore, maintaining alignment with standard signals ensures that everyone on the job site can communicate effectively and understand the signals being used, thereby promoting a safer working environment.