Removed an exact duplicate CHP source alias after comparing crash and associated records. The corrected frozen canonical table represents the report once; raw source files and the alias crosswalk remain available.
Evidence: data/processed/dedup/within_source_alias_crosswalk.csvVERSION HISTORY & ACCOUNTABILITY
San Jose Crash Map Versions, Updates and Corrections
Data release 2020-2024.2026-09-06. Study: 2020–2024. Sources accessed 6 September 2026.
Current San Jose crash-data release
Qualified official-source snapshot; narrow highway and exposure coverage; explicit limitations required.
No independent transportation or GIS reviewer has been appointed or attested to review in this release. Named author and research-contact fields are pending publisher designation.
Documented data corrections
The common study period is 2020–2024. The City's rolling source currently covers 2021–2025; this study does not call its selected period the latest rolling window.
Evidence: output/source_notes.mdCorrection policy
Preserve the dated input snapshots. Verify reported errors against source records, publish a dated correction describing the affected metric or geography, regenerate all dependent tables and map assets, and retain the superseded release for reproducible citations. Do not silently replace a published release.
For a correction, retain the report URL, edition, crash/source ID, metric and supporting official evidence. A dedicated intake address will be added when the publisher designates its research contact.
Future editions
Create a new dated edition after the common period and source completeness have been verified. Preserve the previous edition and explain changes in coverage or classification before making year-over-year comparisons.
Shared-view links identify the frozen study and do not silently switch to newer records. Snapshot SHA-256:
cc508e9c47f1e61f767b6f4d724fc415cbc9bc817cf724f34d6e6246bfbbbec6