Transport in Denmark is developed and modern. The motorway network covers 1,111 km while the railway network totals 2,667 km of operational track.The Great Belt Fixed Link (opened in 1997) connecting the islands of Zealand and Funen and the New Little Belt Bridge (opened in 1970) connecting Funen and Jutland greatly improved the traffic flow across the country on both motorways and rail. The two largest airports of Copenhagen and Billund provide a variety of domestic and international connections, while ferries provide services to the Faroe Islands, Greenland, Iceland, Germany, Sweden, and Norway, as well as domestic routes servicing most Danish islands. The largest railway operator in Denmark is Danske Statsbaner (DSB) — Danish State Railways. Arriva operates some routes in Jutland, and several other smaller operators provide local services. The total length of operational track is 2,667 km, 640 km electrified at 25 kV AC, 946 km double track (2008).508 km is privately owned and operated. Track is standard gauge. The railway system is connected to Sweden by bridge in Copenhagen and ferry in Helsingør and Frederikshavn, by land to Germany in Padborg and ferry in Rødby and to Norway by ferry in Hirtshals. The road network in 2008 totalled 73,197 km of paved road, including 1,111 km of motorway. Motorways are toll-free except for the Great Belt Bridge joining Zealand and Funen and the resund Bridge linking Copenhagen to Malmö in Sweden.