Trams are a major form of public transport in Melbourne, the capital city of the state of Victoria, Australia. As of May 2017, the Melbourne tramway network consists of 250 kilometers (160 miles) of double track, 493 trams, 24 routes, and 1,763 tram stops. The system is the largest operational urban tram network in the world.
Trams are the second most used form of public transport in overall boardings in Melbourne after the commuter railway network, with a total of 206 million passenger trips in 2017–18.
Trams have operated continuously in Melbourne since 1885 (the horse tram line in Fairfield opened in 1884, but was at best an irregular service). Since then they have become a distinctive part of Melbourne’s character and feature in tourism and travel advertising. Melbourne’s cable tram system opened in 1885, and expanded to one of the largest in the world, with 75 kilometers (46.6 miles) of double track. The first electric tram line opened in 1889 but closed only a few years later in 1896. In 1906 electric tram systems were opened in St Kilda and Essendon, marking the start of the continuous operation of Melbourne’s electric trams.
Ticketing, public information, and patronage promotion are undertaken by Victoria’s public transport body, Public Transport Victoria. The multi-modal integrated ticketing system, myki, currently operates across the tram network.
At some Melbourne intersections (most within the CBD), motor vehicles are required to perform a hook turn, a manoeuvre designed to give trams priority. To further improve tram speeds on congested Melbourne streets, trams also have priority in road usage, with specially fitted traffic lights and exclusive lanes being provided either at all times or in peak times, as well as other measures.
According to Wikipedia