What action should be taken if a mandatory directive is made void?

When a mandatory directive is made void, it is essential to mark the directive as "VOID." This action clearly communicates that the directive is no longer valid and should not be followed. Marking it as void serves to prevent any misunderstanding or accidental compliance, ensuring that all personnel are aware that the directive should be disregarded.

Notifying the train dispatcher, while important for other operational communications, does not directly address the status of the directive itself. Simply deleting it from the records could lead to confusion or gaps in documentation. Keeping it for future reference might create uncertainty among crew members about whether to consider it valid at any point, which can compromise safety and operational integrity. Thus, marking the directive as "VOID" is the most effective way to manage its status clearly and responsibly.