DEPLOYDatabase

Revision history

ATGMS (Automated Track Geometry Measurement System) revision history

Every change to this record is dated, sourced, and independently verified where marked. Nothing is edited silently.

Tracked since
Feb 3, 2023
Recorded events
5

Model

Back to ATGMS (Automated Track Geometry Measurement System)

Activity

  1. CreatedJul 23, 2026
    Record created

    Added to the verified registry

  2. DeploymentJun 1, 2024
    Deployment recorded

    at United States

  3. DeploymentJun 1, 2024
    Deployment recorded

    at Germany, Europe

  4. IncidentMar 2, 2024
    Incident recorded

    Three Norfolk Southern trains collide and derail in Easton, Pennsylvania

  5. IncidentFeb 3, 2023
    Incident recorded

    Norfolk Southern train derailment in East Palestine, Ohio releases hazardous materials

How this log works

This timeline aggregates every dated signal on the record (creation, deployments, price points, verified media, incidents, and Arc G field changes), newest first. A verified event is independently confirmed; an unverified one is recorded but not yet field-verified. The Arc G field-change log is forward-only: it accrues from Arc G adoption (2026-06-04) and records material changes as they flow through the updateEntityField chokepoint. Nothing is edited silently.

Machine-readable: /models/ns-atgms/history.md + REST /v1/models/5eefc909-a672-4174-9840-9e355f110f27/history.