What takes precedence over any conflicting rules?

The correct answer is that special instructions, general orders, and general notices take precedence over any conflicting rules. This is because these documents are typically created to address specific situations, conditions, or operational needs that are not adequately covered by the standard rules in the operating rule book.

For example, there may be circumstances that require immediate attention or adjustment in procedures due to unique service demands or safety concerns. In such cases, the directives in these special instructions or general orders will override the existing rules to ensure safety and efficient operations.

They serve as authoritative guidelines that adapt to evolving circumstances, reinforcing that they are critical in maintaining the operational integrity of the railway system. Thus, they are viewed as the primary source of operational guidance, ensuring that any new or immediate concerns are addressed effectively.