The Prague tram (streetcar) system is the largest tram system in the Czech Republic, consisting of 140 kilometres of track, over 900 tram cars, and 33 lines with a total route length of 540 km. It is operated by Dopravní podnik hlavního města Prahy A.S., a company owned by the City of Prague. The system served 356 million passengers in 2008. The first horsecar tram line was opened in 1875; the first electric tram ran in 1891.