an additional five stations: Finnoo, Kaitaa, Soukka, Espoonlahti and Kivenlahti, and was originally expected to be completed in 2023 at the earliest. The extension was completed on 3 December 2022. Railway transport There are nine railway stations in Espoo, of which only the Leppävaara railway station serves long-distance traffic. The Leppävaara railway station is the busiest railway station in Espoo, with the Espoo railway station being the second busiest. The local traffic on the Rantarata railway is frequent, and the train lines are marked with letters. L trains stop at every station from Helsinki Central Station to Kirkkonummi railway station. E, U, L and X trains stop at every station in Espoo and Kauniainen except Mäkkylä railway station. Only A and L trains stop at Mäkkylä. Y trains between Helsinki Central Station and Siuntio railway station stop at Leppävaara railway station, Espoo railway station and Kauklahti railway station. A trains travel along the Leppävaara city railway with a terminus at Leppävaara. All local trains travelling through Espoo stop at Pasila railway station, with connections to Tampere and Saint Petersburg in Russia, and also at Huopalahti railway station, with a P train connection to the Helsinki Airport in northern Vantaa. Long-distance trains between Helsinki and Turku previously stopped at Espoo railway station. Starting from autumn 2015 the stop was moved to Leppävaara railway station. Bus transport Numerous bus lines serve public transport in Espoo. The Helsinki Regional Transport Authority is responsible for bus transport in Espoo, planning the routes, timetables and ticket systems. Bus line 200 is the only trunk line in Espoo, travelling between Espoon keskus and the Eliel Square in central Helsinki. The line has 32 stops, which is 12 stops fewer in Espoo than on the previous trunk line 235. There are a hundred accessible bus stops in Espoo. The first accessible stop was built in 2006 on Puolarintie, next to the Puolarmetsä Hospital. Bus lines in southern Espoo travel to the Matinkylä metro station and at times of heavy traffic, directly to the Kamppi Center in Helsinki. There are also internal bus lines to Tapiola. In contrast, the bus lines in central and northern Espoo travel via Töölö to the Eliel Square. All line numbers of Espoo bus lines were changed to three digits in the 2010s. Line numbers beginning with 1 mainly travel in southern Espoo and line numbers beginning with 2 in central and northern