Topic summary
Milan S Lines

The Milan S Lines are a commuter rail system serving the metropolitan area of Milan, Italy. The system comprises 13 lines serving 124 stations, for a total length of 403 km. There are 415 daily trips by the trains with a ridership of about 230,000 per day.
The core of the system is the Passante, an underground railway running through the city approximately from the north-west to the south-east. Several lines share this track, making the service in the city centre comparable to a metro line or S-Bahn system.
The service timetable is based on a clock-face scheduling. Although operated by different companies, the Milan Metro and the suburban rail service have integrated tickets.