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Maintenance · UK

Corrections and source conflicts

A credible error or source change immediately removes the affected claim from dependent calculations, rankings and instructions while it is reviewed. Conflicts are resolved by matching jurisdiction, object, effective date, metric and authority rather than averaging incompatible statements. If uncertainty remains, the conclusion narrows or becomes unknown, and any E3 safety conflict takes the stricter boundary.

Health and Safety Executive: Electric and hybrid vehicles

Reviewed

Key facts and evidence

For UK EV content reviewed on 13 August 2026, a correction starts at the stable claim key and propagates to every dependent page, calculation and output. Conflicting sources are compared by authority, jurisdiction, date, object and definition; they are not blended. The limit is fail-closed: unresolved facts become unknown, while safety conflicts retain the stricter current E3 class, warning and hand-off.

Health and Safety Executive: Electric and hybrid vehicles

How EV Evidence contains errors, records material corrections and resolves conflicting UK sources without silent averaging or weaker safety advice.

Report and triage

A report identifies the page, exact statement, claim key if visible, supporting URL and why the content may be wrong or stale. Triage distinguishes typographical, source, transformation, mapping, jurisdiction, safety and commercial issues. A credible consequential issue is contained before a replacement claim is written.

Dependency containment

The affected claim is removed from answer-first copy, key facts, steps, calculators, scores, recommendations, metadata, search, downloads and structured data. The same stable claim key locates derivatives. A failed source fetch does not replace the previous value with zero, and historical display cannot continue to drive a decision.

Conflict comparison

Reviewers compare the sources' legal authority, responsible body, jurisdiction, effective period, publication or update date, population, object, denominator, unit and metric definition. Apparent conflicts caused by different scopes are published separately. Genuine unresolved conflicts do not receive an average or a selectively convenient answer.

Safety and policy resolution

Current controlling law and the responsible authority govern legal scope. For safety publication, the exact E3 action row is the ceiling and the stricter class, advice, flags, warnings and hand-off remain. If the evidence cannot support a current answer, the claim becomes unknown or an honest empty state.

Material correction record

A material correction records the claim key, previous and replacement meanings, reason, affected period, old and new sources, review date and downstream impact. The correction does not erase the source history or restate an access date as a publication date. Pure spelling changes need no factual change record.

What to do next

Treat a claim marked under review as unavailable and use the current responsible source or qualified professional for an immediate decision.

Immediate action: Report the exact statement, page URL, source and reason for concern so the stable claim key can be traced.

  • Stop relying on the disputed claim when it affects safety, legality, eligibility, price, score or another consequential decision.

Professional hand-off

  • Send evidence and correction reports to editorial review; use the responsible regulator, authority or suitably qualified professional for a time-critical external decision.

Questions this record can answer

What does the sourced evidence say about report and triage?

A report identifies the page, exact statement, claim key if visible, supporting URL and why the content may be wrong or stale. Triage distinguishes typographical, source, transformation, mapping, jurisdiction, safety and commercial issues. A credible consequential issue is contained before a replacement claim is written.

What does the sourced evidence say about dependency containment?

The affected claim is removed from answer-first copy, key facts, steps, calculators, scores, recommendations, metadata, search, downloads and structured data. The same stable claim key locates derivatives. A failed source fetch does not replace the previous value with zero, and historical display cannot continue to drive a decision.

What does the sourced evidence say about conflict comparison?

Reviewers compare the sources' legal authority, responsible body, jurisdiction, effective period, publication or update date, population, object, denominator, unit and metric definition. Apparent conflicts caused by different scopes are published separately. Genuine unresolved conflicts do not receive an average or a selectively convenient answer.

Sources