Producenci, dostawcy
1Alcatel
2Alstom
3Ansaldo Signal
4AnsaldoBreda
5Bombardier
6Faiveley
7Frequentis
8HARTING Technology Group
9Invensys
10Kapsch
11Knorr-Bremse
12Marconi Selenia
13Nortel
14Sécheron
15Siemens
16Voith