1. Alstom Holdings by General Electric
2. Anacostia Rail Holdings
3. Avtec Inc.
4. CASCO Signal Ltd.
5. Cisco Systems Inc.
6. DXC Technology Company
7. Hexagon AB
8. Hitachi Rail STS S.p.A.
9. International Business Machines Corporation
10. IVU Traffic Technologies AG
11. Loginext Solutions Private Limited
12. Maptek Pty Limited
13. Motorola Solutions Inc.
14. Pacific Electric Railway Company
15. Passio Technologies
16. Rail-Flow GmbH
17. RAILMP
18. RailRCS
19. RideOnTrack bv
20. Rio Grande Pacific Corporation
21. Siemens AG
22. Strukton Groep N.V.
23. Thales Group
24. Toshiba Infrastructure Systems & Solutions Corporation
25. Tracsis PLC
26. Trapeze Software Inc.
27. Wabtec Corporation
28. Wakelet Limited
29. WSP Global Inc.
30. ZEDAS GmbH
31. Zetron Inc. by Codan Limited