Yanchep Line Nightly Platform Change Sun 17 Aug - Tue 19 Aug The Yanchep Line will run from Perth Station Platform 9 nightly from Sunday 17 until Tuesday 19 August to facilitate maintenance works on the Mandurah Line.The last Yanchep Line train to depart Perth Underground Platform 1 each night will be 10.17pm.Services will resume from the regular platform from first service each morning.If you require further assistance regarding service changes or planning your journey, please call the Transperth InfoLine on 13 62 13 (TIS: 13 14 50). Hearing or speech impaired? Call via NRS 133 677 and ask for 13 62 13.