Line S2 (Milan suburban railway service)

The S2 is a commuter rail route forming part of the Milan suburban railway service (Servizio ferroviario suburbano di Milano), which converges on the city of Milan, Italy.

The service operates over the Milan–Asso and Milan Passante lines. Like all other Milan suburban railway service routes, it is operated by Trenord.

Route
S2, a cross-city route, heads initially in a southwesterly direction from Mariano Comense to Seveso, and then south to Milano Bovisa-Politecnico. From there, the line runs across the municipality of Milan, via the Milan Passante railway, to Milano Rogoredo. The journey takes 1h08'.

History
The S2 was introduced on 12 December 2004, and operated initially between Mariano Comense and Milano Porta Vittoria.

With the change of timetable on 15 June 2008, the service was extended from Milano Porta Vittoria to Milano Rogoredo, where there is interchange with regional trains and long-distance services to and from Genoa, Bologna and Mantua.

The initial plans for the service foresaw a further extension from Milano Rogoredo to Pavia, but that has not materialized: Pavia has since been connected to the suburban railway service by the new S13; service is planned to extend to Pieve Emanuele as soon as the infrastructure will allow it, with the quad tracking of the section in order to separate long distance and regional trains from suburban trains.

Stations
The stations on the S2 are as follows (stations with blue background are in the municipality of Milan):