Thick fog along Pinjarra Road on Wednesday morning. Photo: Caitlyn Rintoul.
UPDATE (10.10am): Trains have returned to normal operation on the Mandurah Line.
Trains on the Mandurah Line were delayed on Wednesday morning due to a thick layer of fog blanketing the region.
Despite the weather conditions, trains will continue to run but will not abide by the regular schedule.
Read more: Mandurah, Joondalup train lines delayed
Commuters have been urged to allow extra travelling time and be aware that delayed trains may not connect with timetabled bus and train services.
If you require assistance regarding service disruptions or planning your journey, please call the Transperth InfoLine on 13 62 13.
Hearing or speech impaired people can call via NRS 133 677 and ask for 13 62 13.
