The cost of the over-ground and underground transport is the same. Tickets can be bought from news-stands, bars, tobacconists, and from automatic vending machines, but not in buses.
Public transport runs from approximately 6.00 hrs. until 24.00 hrs., and there is a bus service that replaces Line 1 of the Underground at night.

The taxis in Milan are white, and park in ranks supplied with a telephone (the numbers can be found in the telephone directory under Taxi). 
Taxis can also be called via radiotaxi switchboards on the following numbers: 026767; 028383; 025353; 023100. Because of the frequent changes made to the tariffs, you should read carefully the information shown inside the taxi.