RFI Rete Ferroviaria Italiana, Gruppo Ferrovie dello Stato (Italian Railway)
ITALFERR, Gruppo Ferrovie dello Stato (Italian Railway engineering)
TRENITALIA, Gruppo Ferrovie dello Stato (Italian Railway passenger transportation)
Ferrovie Nord Milano (Regional Railway Lombardia)
Metropolitana Milanese (Public Transportation Company of Milan engineering)
RFT Rete Ferroviaria Toscana (Regional Railway Tuscany)
ATAF (Public Transportation Company of Florence)
Ferrovia Centrale Umbra (Regional Railway Umbria)
ATAC (Public Transportation Company of Rome)
Ferrovie della Calabria (Regional Railway Calabria)
ALSTOM Transport
ANAS
ANSALDO STS
ASTALDI
COOPSETTE
ENEL
TERNA
US ARMY
VAE
CNR (National Research Council)
Municipality of Rome