1972 and stopped in August 2004. The letter P was reintroduced in 2015 as a clockwise Ring Rail train. Limited-stop train to Kirkkonummi The S train ran from Helsinki to Kirkkonummi. The train was operated with one hour intervals in both directions. Of the two daytime trains running between Helsinki and Kirkkonummi, the S trains were faster. From 28 May 1972 to 25 May 1974, the S trains were running between Helsinki and Kauniainen. The route was continued to Kirkkonummi on 27 September 1987. The S train was abolished in March 2016 when two small stops located between Kauklahti and Masala and served only by the U-line were closed and the U line now runs twice an hour. Express train to Kirkkonummi The former X train ran from Helsinki to Kirkkonummi and was the fastest commuter train service on Helsinki-Kirkkonummi line along with the Y train. The X train had only one service in both directions on weekdays. The X train was introduced in March 2016 and abolished in June 2018. Rolling stock Since 2017, all services within the HSL region have been operated with a fleet of 81 Stadler FLIRT trainsets manufactured between 2008 and 2017, designated as Class Sm5. The previously used Class Sm2 and Class Sm4 trainsets have since served on VR-operated longer-distance commuter routes. VR is looking to sell the remaining Class Sm2 sets and replace them with a brand new class, tentatively called Class Sm7. In a unique structure of ownership and management, the Class Sm5 trains are owned by neither HSL as the authority or VR as the operator. Instead, to make the purchase of new modern trainsets possible, a holding company called was established by the four cities forming Greater Helsinki. Under direct ownership of said cities, JKOY is a fully independent rolling stock corporation capable of leasing trainsets to any train operator when necessary. Formerly, commuter rail has been operated with locomotive-hauled wooden-bodied cars as their last commercial use before being retired in the late 1980s. After that, Class Eil cars replaced them, remaining in use themselves until the late 2010s. See also Helsinki Metro Jokeri light rail VR commuter rail References External links Regional rail in Finland Transport in Helsinki 1969 establishments in Finland