The KTM West Coast railway line is a main railway line in Malaysia. It runs from close to the MalaysiaâÂÂThailand border in Perlis (where it connects with the State Railway of Thailand) to the Woodlands Train Checkpoint in Singapore, running near parallel to the west coast and serving the west coast states of Peninsular Malaysia. The line is owned and used entirely by Keretapi Tanah Melayu (KTM). Past , the line continues on to become the Thai Southern Line, which continues up towards Hat Yai and Bangkok.
The 1,151-kilometre line is busier than its east coast counterpart, the East Coast railway line since it is double-tracked and electrified for most of its route and has more services. The line handles a variety of passenger train services such as KTM ETS services, KTM Intercity services, State Railway of Thailand International Express services, KTM Komuter services within the Klang Valley and the George Town Conurbation, and freight trains. The entire line that is used for passenger services, except the Singapore section, is fully double-tracked and electrified.
Major stations on the line include , , , , , , and the Woodlands Train Checkpoint in Singapore.
The West Coast railway line was developed in stretches on 1 June 1885, with the opening of the TaipingâÂÂPort Weld Line, and 1932 when the line opened up to , thus spanning the entire west coast of Peninsular Malaysia from on the MalaysiaâÂÂThai border to Singapore. The line began with the construction of branches linking coastal ports with inland tin mining areas before they were gradually linked up by the main truck line running through the interior of the West Coast states of Peninsular Malaysia.
The latest new lines to be built were the branch lines to West Port, North Port, Tanjung Pelepas, Pasir Gudang and the North Butterworth Container Terminal at the Port of Penang. The trunk line had also seen sections becoming disused, abandoned or even removed, with the latest being the closure and subsequent removal of the southernmost stretch of track between the Woodlands Train Checkpoint and in 2011.
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The West Coast railway line is served by a variety of train services:
The project was implemented by KTM to rehabilitate and upgrade the signalling system, electrification and tracks of the railway in the Klang Valley region, which are the oldest double-tracked and electrified railway in the country. The project began in 2016. Phase 1 of the KVDT, which entails the rehabilitation of 42 km of tracks between and , as well as between and Batu Junction, while projected to be completed in 2021, was only completed in 2025. It was projected that once complete, train frequencies will be reduced to just seven-and-a-half minutes.
Phase 2 of the KVDT, which began in 2023, will cover the sections from Port Klang/Bangsar Junction to , and from to . It is projected to be completed by 2029.
On 9 May 2025, it was announced that the cargo-only Kempas BaruâÂÂPasir Gudang railway line will soon be upgraded to accommodate passenger services. Passenger service along this line will primarily serve the high passengers flow expected from the upcoming Johor BahruâÂÂSingapore RTS line in Johor Bahru, and is planned to be operational by 2026.
The West Coast main trunk line stretches from on the MalaysiaâÂÂThailand border to the Woodlands Train Checkpoint in Singapore.
The main trunk line is double-tracked and electrified from Padang Besar to . The line between JB Sentral and the Woodlands Train Checkpoint remains single-tracked and not electrified.
The West Coast railway line connects with the State Railway of Thailand at Padang Besar, while the East Coast Line branches off at .
The West Coast railway line includes several branch lines from the main trunk line, namely:
The Bukit Mertajam Junction to , Batu Junction to , Port Klang Junction to station, as well as the branch line to are double tracked and electrified.
The line from to Westport and its shipping terminals, to the NBCT, as well as the branch lines between Skudai Junction and the Port of Tanjung Pelepas and the and Pasir Gudang are single lines and not electrified.
There are also branch lines where most or only a few tracks exist but are currently not used for any service, closed or dismantled are:
None of these disused branch lines are double tracked nor electrified.