Early public transport service in Milan dates back to 1801, operated with horse-drawn carriages.
Until 1917 the tram system was operated by several different companies, however, since that year the municipality took control over the whole network.
[3][5] New night bus lines during weekends have been introduced since 24 September 2011, running from 2 am to 6 am on Fridays and Saturdays.
Daily international destinations include Bern, Lugano, Geneva, Zürich, Paris, Nice, Marseille, Vienna, Barcelona and Munich.
Beginning in 2011, a new company, Trenord, operates both Trenitalia and LeNord regional trains in Lombardy.
Congested traffic is also responsible for the high pollution rate in the Milan area.
[14] Counter measures included the partial ban of private cars inside the Milan urban area for some period, usually during Sundays.
[15][16] The program resulted in a lower proportion of highly polluting vehicles on the roads in the city.
However, the program progressively lost effectiveness as the city's vehicle fleet got greener.
[17] Although high by European standards, Milan is one of the big cities with the lowest number of motor vehicles per capita in Italy, with 543 per 1000 people in 2011,[18] reduced to around 495 per 1000 as of 2021.
GuidaMi, the first scheme, is managed by ATM and comprises 132 vehicles and about 5,500 registered users.
Other services include E-vai from Trenord, DriveNow from BMW, Twist and Enjoy from Eni.
Orio al Serio airport will instead be connected to the nearby city of Bergamo via a railway line that is projected to be finished by 2026; from Bergamo main station, trains will be able to reach the stations of Milano Centrale in less than an hour and Milano Porta Garibaldi.