KL Sentral–Terminal Skypark Line

The KTM KL Sentral–Terminal Skypark Line (formerly known as the Skypark Link) is a currently suspended limited express train service in Kuala Lumpur, Malaysia between Kuala Lumpur Sentral (KL Sentral) and Sultan Abdul Aziz Shah Airport (Subang Airport). It is Malaysia's second airport rail link service, after the Express Rail Link system (KLIA Ekspres and KLIA Transit).

Operated by Keretapi Tanah Melayu (KTM), the service shares the same tracks as the Tanjung Malim–Port Klang Line between KL Sentral and Subang Jaya, however, it branches off after Subang Jaya, where it heads towards Subang Airport. Ordinary Tanjung Malim–Port Klang Line trains stop at all stations between KL Sentral and Subang Jaya, while the KL Sentral–Terminal Skypark Line runs non-stop between them. One new station, the Terminal Skypark station, located opposite Subang Airport, is built to serve the line. Two reserve stations were planned between Subang Jaya and Terminal Skypark, but are currently not constructed.

The line is one of the components of the Klang Valley Integrated Transit System. It is numbered 10 and colored brown on official transit maps.

Services are temporarily suspended since 15 February 2023 due to low ridership, the funds to operate the service was said to be reallocated to KTMB's MyRailLife program enabling students and disabled folks to ride for free. The trainsets are redeployed to serve the KTM Komuter Northern Sector.

Route
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The 26 km KL Sentral-Terminal Skypark Line commenced operations on 1 May 2018 and runs between KL Sentral and Subang Skypark with a stop in Subang Jaya. In contrast to ordinary Port Klang Line services, after leaving Subang Jaya, the KL Sentral-Terminal Skypark Line skips all stations between Setia Jaya and Abdullah Hukum, both stations inclusive.

The journey time from KL Sentral to Subang Skypark is 30 minutes.

Operations began on 1 May 2018 with free rides available until the end of the year. Free rides were only provided for trips that begin or end at Terminal Skypark; no free rides were given for trips between KL Sentral and Subang Jaya only.

Stations
The three stations served by the KL Sentral-Terminal Skypark Line are, from east to west:

Frequency
Services were suspended between March 2020 and October 2021 due to the Coronavirus pandemic. Services were restored on 15 October 2021. Services were suspended again from 15 February 2023 due to low ridership. The former timetable is here.

There were 25 services a day: 12 trips from KL Sentral to the airport, and 13 trips from the airport to KL Sentral.

Rolling stock
The service uses four refurbished KTM Class 83 electric multiple units (EMUs). The original livery, which featured blue and yellow colors associated with ordinary KTM Komuter services, was changed to grey and orange. The trains are expected to accommodate up to 300 passengers at once and are intended to lighten traffic congestion and serve air passengers and people working at Subang Airport.

Background
The Electrified Double Tracking Project consists of two phases: Phase 1 between Subang Jaya and Subang Skypark, which was awarded to Konsortium Skypark Link–Lion Pacific Sdn Bhd, and Phase 2 from Subang Skypark, through Kampung Melayu Subang and Ladang Elmina and ending at Sungai Buloh station to allow rail cargo traffic to bypass downtown Kuala Lumpur.. However, unconfirmed reports state that alternative plans, including an extension of the ECRL to Serendah instead of extending the KL Sentral-Terminal Skypark Line, were being studied.

The construction of the link was funded by the Ministry of Transport to provide rail-based public transport to connect the Sultan Abdul Aziz Shah (SAAS) Airport and its vicinity with the existing KTM railway. The RM521 million rail link was commissioned in 2013 with an initial completion date in 2016, but this was later extended to 2018.

The project consists of two main parts: an at-grade section between Subang Jaya and the old Sri Subang spur line for the length of 4.09 km using the existing railway reserve previously funded by Petronas to transport fuel from Port Klang to the airport, and a new section between the new location of Sri Subang station for the total length of 4.067 km which is elevated along the existing Sungai Damansara river reserve, ending at the car park just outside the airport.

Connection with KLIA
The KL Sentral–Terminal Skypark Line interchanges with the Express Rail Link at KL Sentral, thus allowing rail connection between the Subang Airport and the Kuala Lumpur International Airport (KLIA).