Milan is tourism

Those who love riding their bikes in the city can take advantage of the option of transporting them on the subway. The service is offered on the subway network (excluding the month of December) on weekdays from the beginning of service to 7:00am and from 8:00pm to the end of the service and on Saturdays, Sundays and public holidays from the beginning to the end of the subway service. Tandems and motorised bicycles are not allowed.
 
A valid travel ticket is required in order to make use of this service. The transport of bikes is free of charge from November 1, 2011. Children under the age of 12 can only  transport bicycles if accompanied by an adult; groups of 10 or more cyclists are required to contact the  ATM information line at least two working days in advance to arrange  transport plans and  request any assistance which may be required from the station personnel.

It’s recommended to check the service calendar and timetable by calling the Atm free information number 800.80.81.81, accessible every day from 7:30am to 7:30pm.