ATM S.p.A. 

2023
2022
2021
2020
2019
2018

ATM Servizi

2017

ATM Servizi Diversificati S.r.l.

2020
2019
2018

Citylink S.r.l.

2023
2022
2021

Gesam

2023
2022
2021
2020
2019
2018

Nord Est Trasporti S.r.l.

2023
2022
2021
2020
2019
2018

Rail Diagnostics S.r.l.

2023
2022
2021
2020
2019
2018