# TIER IV x Yamaha Motor (eve autonomy JV) revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Partnership: [TIER IV x Yamaha Motor (eve autonomy JV)](/partnerships/tier-iv-x-yamaha-motor-eve-autonomy-jv.md)

## Recorded posture

- First recorded event: 2020-01-01
- Last material change: 2020-01-01
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2020-01-01**: created (source: https://community.ionanalytics.com/ma-news-analysis/japanese-autonomous-driving) (verified)

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /partnerships/tier-iv-x-yamaha-motor-eve-autonomy-jv/history. REST: /v1/partnerships/cd8bd33c-1966-4e53-a5cf-e2e5eb9873c5/history. HTML: [/partnerships/tier-iv-x-yamaha-motor-eve-autonomy-jv/history](/partnerships/tier-iv-x-yamaha-motor-eve-autonomy-jv/history)._