Trams in Milan

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Milan tramway network
Intersection between the line 1 tram cars 1754 and 1582 of the ATM of Milan under the Porta Nuova medieval gate. This type of historical trams are also used in San Francisco, United States[1]
Operation
Locale	Milan, Italy
Horsecar era: 1881 (1881)–1898 (1898) Status Replaced by electric trams Operator(s) SAO Propulsion system(s) Horses Track length (single) 10.6 km (6.6 mi) Track length (double) 40.3 km (25.0 mi) Track length (total) 50.9 km (31.6 mi)
Electric trams era: 1893 (1893)–present Status Still operational Routes 17 Operator(s) Edison (1893–1917) ATM (since 1917) Track gauge 1,445 mm (4 ft 8+7⁄8 in) (Italian gauge) Propulsion system(s) Electricity Electrification 600 V DC overhead lines Track length (total) 180.3 km (112.0 mi)[2] Website ATM (in English)

The Milan tramway network (Italian: Rete tranviaria di Milano) is part of the public transport network of Milan, Italy, operated by Azienda Trasporti Milanesi (ATM).

In operation since 1881, the network is currently 157 km (98 mi) long,^[3] making it one of the biggest in the world. It has the unusual track gauge of 1,445 mm (4 ft 8+7⁄8 in) (Italian gauge),^[4] and comprises 17 urban lines.

While the Milan metro is characterized by a low level of centrality, with no more than two lines ever crossing each other at any of the interchange stations, the tram network is substantially centralized, with nearly half of the lines passing or terminating around Piazza del Duomo, the city central square.^[5]