 They include portions of the West Coast Line between Gemas and Padang Besar and the entire Port Klang branch line as well as Batu Caves branch line.The double-tracked and electrified portions between Tanjung Malim and Pulau Sebang/Tampin, and between Padang Besar and Padang Rengas, as well as the Port Klang, Batu Caves and Butterworth branch lines are used for commuter rail services.Double tracking and electrification of the stretch of the Batu Caves branch line between Sentul and Batu Caves were completed, having added 7.5 km of double-tracked and electrified sections to the network in 2010.