# Wabtec x Penn State (Railway R\u0026D Partnership) revision history

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

Partnership: [Wabtec x Penn State (Railway R\u0026D Partnership)](/partnerships/wabtec-x-penn-state-railway-r-u0026d-partnership.md)

## Recorded posture

- First recorded event: 2026-08-22
- Last material change: 2026-08-22
- Material event count: 1
- Editorial event count: 0

## 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/wabtec-x-penn-state-railway-r-u0026d-partnership/history. REST: /v1/partnerships/bb204063-29c9-4b28-9efc-624e43ee3498/history. HTML: [/partnerships/wabtec-x-penn-state-railway-r-u0026d-partnership/history](/partnerships/wabtec-x-penn-state-railway-r-u0026d-partnership/history)._