Road and rail transport in Finland is the most popular method of transportation, but the road is more popular particularly in rural areas where the railway network does not extend to. There is a large network of express buss services with connections to all major cities and the most important rural areas. Coach stations are operated by Matkahuolto. Local bus services inside cities and towns are controlled by the city councils, such as Helsinki City Transport, which operate some bus lines on a commercial basis. Regional bus lines are also operated within cities with seasonal opted timetables examples are YTV in the Helsinki region and TLO in the Turku region. Passenger trains are operated by the state-owned VR Group. They provide all the main cities and many rural areas, though railway connections are available to fewer places than bus connections. Majority of passenger train services start off or finish at Helsinki Central railway station, and a large proportion of the passenger rail network radiates out of Helsinki. In Finland, there have been three cities with trams: Helsinki, Turku and Viipuri. Only the Helsinki region still operates its tram network. Trams have established a position as one of the main form of public transport in the Helsinki region.