{
  "model_version": "demo-1",
  "reviewed_at": "2026-11-06",
  "mode": "simulation",
  "sources": [
    {"name":"Transport Department — Central pedestrian schemes","url":"https://www.td.gov.hk/en/transport_in_hong_kong/pedestrians/pedestrianisation/central_/index.html","use":"Queen's Road corridor context; D'Aguilar/Wo On/LKF Friday and Saturday 19:00–05:00 pedestrianisation supports assumed late-night activity shape. No local counts obtained."},
    {"name":"MTR Patronage Updates — September 2026 snapshot","url":"https://www.mtr.com.hk/en/corporate/investor/patronage.php","use":"Domestic-service average weekday journeys Jan–Sep 2026, thousands: 4834,4870,4759,4616,4604,4563,4529,4599,4887. September divided by the nine-month mean is a modest citywide activity factor applied to both model typical and simulated flow. Not Central-station data or a live feed."}
  ],
  "assumptions": [
    "All absolute corner flows, hourly shapes, weekday multipliers, vehicle counts, direction shares, minute fluctuations and tier thresholds are authored assumptions; no street-level calibration or confidence interval exists.",
    "Queen's Road weekday assumed hourly reference rates range 2–84 crossings/min; LKF 2–112 before weekday/context multipliers. A crossing is not a unique visitor or occupancy.",
    "Night multipliers Friday 1.35, Saturday 1.50, Thursday 1.12, Sunday .76, other nights .86. Before 05:00 inherits preceding night's multiplier. Public holidays and one-off events are not modeled.",
    "Upward share interpolates an assumed hourly profile: about two thirds during the evening and about one third after midnight, with bounded minute variation.",
    "Quiet under35, Normal under110, Busy under220, Packed220+ combined crossings/min. Assumed animation levels, not safety or occupancy thresholds.",
    "Updates every10seconds as a rolling-minute estimate. The index compares this estimate against the same modeled weekday and hour, not a measured 4–8week baseline.",
    "The chart sums completed simulated minutes; the current hour is partial, future actual values are blank. Best minute is only selected from elapsed completed minutes. Evening/day ratio is unavailable before18:00 and partial thereafter.",
    "Public context values are pinned, not refreshed automatically. No weather, event, tourism or camera feed is connected."
  ]
}