Data changelog

This log records material corrections and trust-surface changes after publication. Entries are tied to repository commits; nothing is invented to pad the list.

The how-to-report process lives on the editorial & corrections policy. Read the methodology for the source and calculation context behind these updates. This public log starts on 2026-08-08.

Download the FARS state extract cited on this page: fars-state-fatality-statistics.csv (NHTSA FARS · CC BY 4.0).

  1. b3b6a64

    Public /corrections alias and identity CiteThis blocks

    Added a /corrections redirect to the editorial corrections process, a public /changelog of corroborated changes, and Cite this page blocks on identity and legal pages so readers have a stable citation string and a clear path to report data issues.

  2. 9fcb4c8

    County fatality rates matched to 2023 population

    County rates no longer mix multi-year average deaths with a single-year population. ETL pairs 2023 FARS fatalities with 2023 Census PEP population and suppresses unmatched 2023 rates.

  3. ffd5469

    Sitemap lastmod moved to page-vintage

    Static and rankings sitemap entries now advertise per-route page-vintage lastmod values instead of a single empty data-vintage stamp, so crawlers see honest freshness on file-authored surfaces.

  4. 8e21c8b

    Unknown county/state soft-404s return real HTTP 404

    County and state detail routes for unknown slugs now respond with HTTP 404 instead of a soft redirect, so crawlers stop treating missing entities as indexable pages.