Crowd Density Monitoring and Flow Triggers
Establishes how crowd density is measured during an event and the pre-committed thresholds that trigger flow intervention before crush conditions form.
Why This Matters
Crowd crush kills quietly: no fight, no fire, just physics. Every documented disaster shows the same pattern — density crossed a known line while people in authority hesitated. HIG removes the hesitation by deciding the numbers in daylight, before the event, so the night crew executes instead of debates.
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