in service, passengers had to pay attention to the platform LCD screens and announcements to queue at the right part of the platforms. Since December 2017, the Ma On Shan line has been run fully by 8-car trains and all stations retrofitted with automatic platform gates identical to those installed at elevated stations on MTR's other lines. The former West Rail line was served by 33 eight-car SP1900 trains built by a Japanese consortium of Kinki Sharyo and Kawasaki Heavy Industries, of which 22 were originally ordered by KCRC as seven-car trains for the initial opening of the line. Up to 26 sets run during the morning peak service with a 171-second headway; MTRC specifies capacities of 52 seated and 286 standing passengers per car. Beginning in January 2016, all 7-car trains on the former West Rail line were converted to 8-car trains in anticipation of the Sha Tin to Central Link; this was completed in May 2018. During the transition period with both 7-car and 8-car trains in service, passengers had to pay attention to the platform LCD screens and announcements to queue at the right part of the platforms. They were the only trains in use on the line until March 2020, when a newly built eight-car EMU, manufactured by CRRC Changchun Railway Vehicles, entered service on the line. The Tuen Ma line is currently served by 59 eight-car trains: 42 SP1900/SP1950 trains and 17 MTR CRRC Changchun trains, with 6 more SP1900/SP1950 trains currently undergoing reformation works. The line will have a total of 65 eight-car trains once the reformation works are completed. History Before the merger of the two major Hong Kong railway operators, the MTR Corporation (MTRC) and the Kowloon-Canton Railway Corporation (KCRC) rail networks in 2007, both the West Rail (opened in 2003) and the Ma On Shan Rail (opened in 2004) were operated by KCRC. Both railways were envisaged to be extended in the near future; hence, Ma On Shan line platforms were built with reserved structures for elongation at a later date. Both MTRC and KCRC independently submitted their own proposals to the Hong Kong government for developing the Sha Tin to Central Link (SCL) by extending their own existing networks. After numerous revisions of their proposals, the government eventually approved the scheme by KCRC, which involved joining the West Rail and the Ma On Shan Rail via the Wong Tai Sin