Transportation in Sweden is carried out by car, bus, train, tram, boat or aeroplane. Railways in Sweden Rail transport is operated by SJ, DSBFirst, Green Cargo, Vy Tåg and more. Most counties have companies that do ticketing, marketing and financing of local passenger rail, but the actual operation are done by the above-mentioned companies. Total: 11,663 km (includes 3,594 km of privately (in fact county) owned railways) or 9227 km of national railways standard gauge: 11,568 km gauge (7,531 km electrified and 1,152 km double track) (2008) narrow gauge: 65 km of gauge (2008) Trains generally keep to the left, as opposed to all neighbouring countries. Light rail and metros Stockholm Metro (Stockholms Tunnelbana) is the only metro system in Sweden. Cities with light rail (trams); Gothenburg: Gothenburg tram – consisting of 190 km on a total track length of 161 km Norrköping: Norrköping tramway – small but growing Stockholm: Tvärbanan, Nockebybanan, Lidingöbanan, Spårväg City Lund – Lund tramway Stockholm previously had a large tram network, but this was discontinued in favour of bus and metro; a revival of the tram network was seen in the construction of Tvärbanan in the late 1990s and early 2000s. Railway links with adjacent countries Norway at Kornsjø (Gothenburg-Oslo), Charlottenberg/Eda (Stockholm-Oslo), Storlien (Östersund-Trondheim, not electrified Storlien-Trondheim) and Riksgränsen (Narvik-Kiruna) same gauge – same voltage – same protection system. Most Swedish and Norwegian rail vehicles can cross the border. As there is only single-track at all border crossings, there is no need for bridges to make the transition from left- to right-hand traffic. Finland at Tornio/Haparanda break-of-gauge / – other protection system. All freight has to be reloaded. No passenger traffic by rail. Denmark at Öresund bridge same gauge – voltage change 15kVAC/25kVAC – other protection system. Only custom made locomotives or EMUs can cross the border. Bridges to make the transition from left- to right-hand traffic, are located north of Malmö, so all traffic south of Malmö is in right-hand traffic. Road traffic Sweden has right-hand traffic today like all its neighbours. Sweden had left-hand traffic (Vänstertrafik in Swedish) from approximately 1736 and continued to do so until 1967. Despite this virtually all cars in Sweden were actually left-hand drive and the neighbouring Nordic countries already drove on the right, leading to mistakes by visitors. The Swedish voters rejected a change to driving on the right in a referendum held in 1955. Nevertheless, in