Trams in Vienna (, in everyday speech also Bim or Tramway) are a vital part of the public transport system in Vienna, capital city of Austria. In operation since 1865, with the completion of a 2 km route to industrial estates near Simmering, it reached its maximum extent of 292 km in 1942. In February 2015, it was the fifth largest tram network in the world, at about in total length and 1,071 stations. The trams on the network run on standard gauge track. Since 1897, they have been powered by electricity, at 600 V DC. The current operator of the network is Wiener Linien. In 2013, a total of 293.6 million passengers travelled on the network's trams. , there were 525 tramcars in Vienna's tram fleet, including 404 trams or tramsets scheduled for service during peak periods, comprising 215 single cars and 189 motor and trailer sets. History Horsecar tramways The earliest precursor of the Vienna tramway network was the Brigittenauer Eisenbahn, a horsecar tramway. From 1840 to 1842, it led from the Donaukanal to the recreational establishment known as the Kolosseum, at the end of the Jägerstraße. Some two decades later, several firms competed for a concession to construct an urban "horse-tramway" in Vienna. Schaeck-Jaquet & Comp prevailed. By October 1865, trams could be recorded as operating between Schottentor and Hernals, and on 24 April 1866, the route was extended to Dornbach. Subsequently, the municipality of Vienna tried to persuade other firms to construct tramway lines. However, due to the difficult conditions, all of the competing firms (including Schaeck-Jaquet & Comp) arranged a merger, leaving the newly formed Wiener Tramwaygesellschaft as the only remaining firm. In later years, that firm built the majority of the Vienna tramway network. The social conditions were nevertheless such that labour disputes arose. In 1872, the Neue Wiener Tramwaygesellschaft was formed as a competitor, but was able to build only a network in the suburbs. The steam tramways In 1883, the Dampftramway Krauss & Comp. opened Vienna's first steam tramway line, between Hietzing and Perchtoldsdorf. In 1887, the line was extended further south to Mödling, and towards the city centre to Gaudenzdorf, and a new branch line led to Ober St. Veit. A further line, of national significance, was opened in 1886 from Donaukanal to Stammersdorf, where the trams connected with trains on the Stammersdorfer Lokalbahn to Auersthal. From Floridsdorf a branch line