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	Union Switch & Signal, Inc. - http://www.switch.com/ Manufactures signaling, automation, and control equipment and systems for the railroad and mass transit industries.
	IST International, Ltd. - http://www.intelligentsignals.com/ Manufactures intelligent signaling systems.
	Pelco Products, Inc. - http://www.pelcoinc.com/ Manufacturer of traffic signaling hardware.
	Precision Solar Controls, Inc. - http://www.precisionsolarcontrols.com/ Manufactures traffic monitors, signal lamps, and solar powered changeable message signs.
	ActOne1 Communications - http://www.actone1.com/ Indoor, outdoor, mobile, and traffic signal LED message boards and displays.

	Lights To Go - http://trafficlights.com Traffic light controls and signal flashers for collectable and automobilia enthusiasts.
	Traffic Signals Controls, Inc. - http://www.trafsig.com Traffic control systems and related equipment and services.
	Lingo Industrial Electronics - http://www.lingoindelectronics.com/ Distributors of traffic signal and street lighting products and related accessories.
	P. Berghaus GmbH - http://www.berghaus-signalbau.de/ Manufacturers of traffic signal systems for roadworks, beacons, mobile warning trailers, warning lamps, protective equipment and guide elements.

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