Tin to Central Link (Tai Wai – Hung Hom section), 20% of the current East Rail line passengers will take the new East West Corridor. The SP1900 EMUs were withdrawn from the East Rail line on 6 February 2021 and, together with the SP1900/1950 sets on the West Rail and Ma On Shan lines, are being reconfigured as 8-car trains to serve the Tuen Ma line. The conversion project is taking place at MTR's Pat Heung Depot and converted sets are being placed into service on the Tuen Ma line alongside newly delivered CRRC Changchun TML C-trains (nicknamed as the Fake SP1900 due to its similarity to the SP1900). The SP1900 first class cars will be shipped back to Kinki Sharyo factory in Osaka, Japan for conversion into standard-class compartments. The Metro-Cammell EMUs were retired on 6 May 2022, with the last train leaving Hung Hom at 13:00, departing for Sha Tin, and ending service there to a large crowd who took the train, with the crowd giving a big thank-you for the train, as it served Hong Kong for 40 years. First class The East Rail line is the only railway in Hong Kong to offer first class commuter service. One car of each train is furbished as a first class carriage (Northbound Car No.4 and Southbound Car No.6). These compartments have softer and wider seat arrangements; however, standing in the first class car is common during rush hour. Riding on this carriage costs twice that of a standard-class journey and passengers are required to buy the first class ticket (at the vending machine on East Rail line stations or ticket counters at the other stations) or revalidate their Octopus cards on the first class reader (located at the station platforms and beside the gangway door of the First class compartment itself) before entering the first-class car. Ticket Inspectors will perform random checks on train, and failing to produce a valid first class ticket or validated Octopus Card will be liable to a surcharge of $500. Safety The East Rail line is Hong Kong's oldest heavy railway (as opposed to the tramways). While generally regarded as very safe, the railway suffered some serious incidents during its history. Train accidents At about 11:00 on 14 June 1923, a train derailed at Ma Liu Shui due to a landslide following heavy rain. The locomotive and one coach derailed and slid down