When must the word "Void" be written across the Authority form?

The word "Void" must be written across the Authority form when both conditions apply: when limits have been reported clear and when new instructions have been issued. This is a crucial safety measure that ensures all personnel are aware that the previous authority is no longer valid, preventing potential confusion or miscommunication regarding operating procedures.

By marking the Authority form as "Void," it communicates that any prior agreement or authority granted is no longer in effect, thereby emphasizing the necessity for train crews or other personnel to rely on the most current and applicable instructions. This practice helps maintain safety and operational integrity within the railway system, as it underscores the importance of operating under the latest directives.

This ensures that any former information that could lead to unsafe conditions due to reliance on outdated protocols is adequately addressed.