Two maps, the same reports
The same near-miss reports, mapped two ways on a real street map. On the left, the raw report count — what most safety maps show: the busiest street looks the most dangerous. On the right, the rate per 1000 units of exposure — which is what actually reflects danger. Watch the busiest street recede and the real hotspot emerge. Nothing is conveyed by color alone: line thickness scales with the value, and significant hotspots are dashed and labeled. Everything here is in the data table, which the maps supplement.
Ranked segments
Sort the table with the column buttons. Significance and confidence are stated in words, not by color.
| 95% CI | Confidence | Quality flags | ||||
|---|---|---|---|---|---|---|
| Loading published data… | ||||||
How to read this
- Rate /1000 — reports per 1000 units of exposure, not a raw count.
- 95% CI — the plausible range. A wide range means uncertainty.
- Confidence — “uncertain” marks small samples; “exposure unknown” marks segments with no denominator (never ranked as if certain).
- Hotspot (Gi*) — “★ Significant” marks a statistically significant cluster (Getis-Ord Gi*, z > 1.96): hot beyond what exposure and chance explain.