1. Alphatronics NV
2. ARCUS USA Inc.
3. BRAUMS Pty Limited
4. D G Controls Ltd.
5. Dialight PLC
6. Econolite Group Inc.
7. Envoys Electronic Pvt. Ltd.
8. Federal Signal Corporation
9. Fortran Traffic Systems Limited
10. GE Current a Daintree Company
11. Hangzhou ZGSM Technology Co. Ltd.
12. HOM Automation Pvt. Ltd.
13. Horizon Signal Technologies Inc.
14. HS-Vertriebs GmbH
15. La Semaforica srl
16. LITE-ON Technology Corporation
17. Microtrans Infratech Limited
18. Mobotrex Inc.
19. North America Traffic
20. Pfannenberg Group Holding GmbH
21. Pyrotech Electronics Pvt. Ltd.
22. SCAE SpA
23. Shenzhen Fama Intelligent Equipment Co. Ltd.
24. Shenzhen Wide Way Optoelectronics Co. Ltd.
25. Shingo Denzai Co. Ltd.
26. Siemens AG
27. Sinowatcher Technology Co. Ltd.
28. SRL Traffic Systems Limited
29. SWARCO AG
30. Traffic Technologies Pty Ltd.
31. Trastar Inc.
32. WERMA Signaltechnik GmbH