Milan has an extensive internal transport network and is also an important transportation node in Italy, being one of the country's biggest hubs for air, rail and road networks. Internal public transport network includes the Metro, the Suburban Railway, the tram and bus network, as well as taxi, car and bike sharing services. History Early public transport service in Milan dates back to 1801, operated with horse-drawn carriages. After the relocation of the capital of the Italian Kingdom to Milan in 1805, national and international transport services were inaugurated, all operated with carriages, to Vienna, Marseille and several Italian cities. Transport via the Navigli canals was also an important transport mode in that period. The first bus line was opened in 1827, connecting Milan to Lodi. The first railway, to Monza, was inaugurated in 1840. Public transportation Metro The Milan Metro is a rapid transit system, running mainly underground, serving Milan and other surrounding cities. The network consists of 5 lines, identified by different colors and numbers: Milan Metro has a total length of , serving 119 stations, making it the longest metro network in Italy. The system carries about 1.15 million passengers per day. Suburban rail The suburban railway service consists of 11 lines connecting Milan to the greater metropolitan area: The system was brought together from existing lines and the construction of the new Passante, an underground railway line passing through the city. The service began operation in 2004 and now comprises 124 stations. Several extensions are planned. Trams The Tram network comprises 17 urban lines. The system is more than 170 km long and is the biggest network in Italy. The Milan tram network dates back to 1876, when the first horse driven tram line began operation. In 1878 the first steam powered tram was launched and by 1901 all the lines were electric powered. In 1910 line numbers were first introduced. At that time the network was already consisting of 30 lines. Until 1917 the tram system was operated by several different companies, however, since that year the municipality took control over the whole network. In the 1920s the famous Class 1500 streetcars were introduced. Many of them, restored, are still in use today. Beginning from the late 1950s and until the end of the 1970s the tram network was reduced, being replaced in some areas by the new Metro lines or by bus lines. Buses