Line extensions
| LOCATION | KM (MI) | STATIONS | STATUS | TIMING | |
 |
Line 1 Sesto FS-Cinisello/Monza | 1.9 (1.2) | 2 | works in progress | 2017 |
|
Line 1 Bisceglie-Baggio | 3 (1.8) | 3 | in project | - |
 |
Line 2 Cologno Nord-Vimercate | 9,7 (6.0) | 5 | in project | - |
 |
Line 3 San Donato-Paullo Est | 14,8 (9.2) | 6 | in project | - |
 |
Line 4 S. Cristoforo-Linate | 15 (9.3) | 21 | work in progress | 2022 |
 |
Line 5 Bignami-Monza | 6,3 (3.9) | 5 | in project | - |
|
Line 5 San Siro Stadio-Settimo | 4,5 (2.7) | 4 | in project | - |