Patlite Corporation
Federal Signal Corporation
Werma Signaltechnik GmbH
Eaton Corporation PLC (Cooper Industries)
Rockwell Automation Inc.
Potter Electric Signal Company
LLC
Honeywell (Novar GmbH)
Schneider Electric
R. Stahl AG
Auer Signal
E2S Warning Signals
Sirena S.p.A.
Pfannenberg
Tomar Electronics
Inc
Edwards Signaling
Moflash Signalling Ltd