Events
361,604
Recorded incidents
Archive coverage · 2022-01-01 – 2026-09-15. Additional filters apply to the detailed chronology only.
Crashes
66,388
Events classified as crashes
Crash share
18.4%
Of selected incidents
Median RR response
0.0 min
Matched chronology events · all incident types in selection
Response coverage
60.0%
80,695 / 134,382 chronology events with measured responses
Travel time index
1.11×
UrbanSDK · all 2 loaded months · independent of incident filters
Response metrics use matched dispatch-to-arrival pairs in the detailed chronology (2025-01-01 – 2026-09-15), excluding older annual summaries. Zero-minute pairs are measured values and may represent self-discovered incidents; missing measurements are unavailable.
Analysis limitations
Historical records · 2026 is partial. Median response is available by chronology year; legacy aggregate medians cannot be pooled.
Event date is the earliest observed chronology timestamp (America/New_York), not a confirmed incident onset. Reports can include entries beyond the year in their filename.
Response is earliest valid same-unit Road Ranger dispatch-to-arrival pair per event (0–1,440 min); 80,695 events have usable response evidence. 0 invalid pairs excluded.
Severity is the highest recorded ATIS category, not an injury or fatality measure. Recommendations use county/corridor areas; auxiliary coordinate, vehicle and environment tables in report exports are excluded. Exact staging sites are not inferred.
Legacy 2022–2023 per-year distribution files differ from workbook headline crash totals by four records. Overall totals retain the workbook baseline; new chronology counts reconcile exactly.
59 chronology records rejected; 0 duplicate chronology IDs skipped.
New reports replace overlapping years. Coverage ends 2026-09-15; partial years must not be compared as full-year totals.
Combined response and duration medians are unavailable: legacy workbook aggregates cannot be pooled with individual response observations. Select a chronology year to see measured responses.
2026 is partial. Historical chronology only; earlier response summaries are in Operations. Rankings are descriptive, not forecasts.