Act One Communications Products include LED traffic signals, video displays, electronic message centers, energy-saving lightings, and customized signage applications. http://www.actone1.com/

Alstom Signaling Inc. Provides signaling and train control solutions and products. http://www.alstom-sig.com/

Component Products Manufacturer of traffic signal poles, shrouds, polycarbonate framework, and more. http://www.componentproducts.com/

IST International, Ltd. Manufactures intelligent signaling systems. http://www.onlinetrain.com/

Lights To Go Traffic light controls and signal flashers for collectable and automobilia enthusists. http://www.trafficlights.com/

Lingo Industrial Electronics Distribute products relating to the traffic signal and street lighting industries. http://www.lingoindelectronics.com/

P. Berghaus GmbH Manufacturers of traffic signal systems for roadworks, beacons, mobile warning trailers, warning lamps, protective equipment and guide elements. http://www.berghaus-signalbau.de/

Pelco Products, Inc. Manufacturer of traffic signaling hardware. http://www.pelcoinc.com/

Precision Solar Controls, Inc. Manufacturers of traffic monitors, signal lamps, and solar powered changeable message signs. http://www.precisionsolarcontrols.com/

Traffic Signals Controls, Inc. Providing state-of-the-art traffic control systems and ancillary equipment and services. http://www.trafsig.com/

Union Switch & Signal, Inc. Designs, manufactures, and services signaling, automation, and control equipment and systems for the railroad and mass transit industries. http://www.switch.com/

Woo Shin Tech Manufacturer and distributor of visual and audible warning light system and road traffic safety equipment. http://www.wooshintech.com/