[4] The line features automatic driverless trains[5] and is designed for a capacity of 24–28,000 passengers per hour in each direction.

The first three stations of the line (Linate-Repetti-Forlanini) was originally planned to be completed in 2015, as part of the works for the Milan Expo.

[11] The line is planned to connect the south-western neighborhood of Lorenteggio with Linate Airport on the east, passing through the city center.

[5] The line will be operated by 37 four-car EMUs manufactured by Hitachi Rail Italy at Reggio Calabria.

Because of production problems caused by the COVID-19 pandemic, some were sent to Hitachi Newton Aycliffe in England for final fitting out.