Overview
- Transperth said two bogies from a railcar partially came off the track while departing Bayswater at low speed in the mid‑afternoon, and all passengers were safely evacuated.
- The Airport, Ellenbrook and Midland lines were initially cancelled on key inner‑city sections, and the Fremantle line experienced knock‑on delays.
- Replacement buses operated on Routes 901–903 and 902, and limited rail services continued on unaffected segments such as Redcliffe–High Wycombe, Morley–Ellenbrook and Bassendean–Midland.
- By early Tuesday morning local time, the Public Transport Authority said all lines had reopened, though minor delays were expected as timetables normalized.
- The PTA is investigating the cause of the partial derailment, and a separate crash on Tonkin Highway near Perth Airport further slowed traffic during the disruption.