Quick answer
FPS-v2 calculates a distance-and-time base, then adds one point when the selected station name suggests volunteer service. The result remains capped at 10.
How the signal works
Keywords such as “volunteer” and “VFD” create the signal. Other names keep the base value.
Limits and misconceptions
Names are imperfect. An absent keyword cannot prove career staffing, turnout, apparatus, or service quality. The inventory labels the heuristic in plain language.