TRAINS on the Joondalup line will be cancelled nightly until Thursday between Whitfords and Butler stations.
The last full-line services from Perth to Butler will leave at 8.08pm, from Perth to Clarkson at 8.23pm and from Butler to Perth at 8.33pm.
Trains will resume with the start of timetabled services each morning.
Replacement buses will run while trains are cancelled.
Passengers should allow extra travelling time and be aware replacement buses may not connect with timetabled bus and train services.