@mekkaokereke {fatalities / mile} feels like "if you make a thing that moves or operate a service that moves", you MUST report this number every time you report earnings, taxes, or file misc forms for regulatory or statutory compliance.
And if we lived in the future we were promised in the 2000s, every time the company is mentioned, the text would include this number... "Acme [0.76 f/m] announced today..."