Data changelog

What changed, and when

This log records material public-product, methodology, and source-presentation changes. Routine source-record revisions remain possible between entries.

Last updated June 30, 2026

June 30, 2026

  • Published launch findings for ZIP 90504, Anaheim and Santa Ana, and San Diego with maps, data downloads, methodology, limitations, and citations.
  • Added restricted, read-only map embeds with source, methodology, reporting-window, and coverage context.
  • Added direct “Embed this view” handoff from the public map.
  • Changed public map positioning from acquisition language to neutral research language.
  • Added institutional standards, corrections, newsroom, and reuse documentation.

June 29, 2026

  • Added responsible applications page describing field-tested aggregate-data workflows and ethical boundaries.
  • Expanded static metadata, canonical URLs, structured data, and sitemap coverage for public routes.

Ongoing source revisions

California Crash Reporting System records may be created, amended, or completed after an incident. Counts for a historical window can therefore change after publication. Public pages should be treated as versioned analytical views, not immutable official totals.