What is a mandatory directive?

A mandatory directive is an instruction that must be recorded in writing. This requirement ensures that the directive is officially acknowledged and can be referenced by train crews or personnel as necessary. The purpose of a mandatory directive is to provide clear, enforceable guidelines that need to be followed to maintain safety and operational standards within the railway system.

Such directives are critical in instructing personnel on actions that must be taken under specific circumstances, ensuring compliance with safety regulations and procedures. Being an official, written instruction also allows for proper documentation and accountability, which is vital for maintaining the integrity of operations and for future reference during audits or investigations. This depth of understanding delineates mandatory directives from suggestions, standard procedures, or optional guidelines, which unlike mandatory directives, do not carry the same weight of obligation or official documentation.