• Advanced Traffic Products: Signal preemptors, vehicle detectors and signal communication equipment
• Athens Technical Specialists, Inc.: ATSI Conflict Monitor & Loop Detector Test Equipment
• BES Concrete Products: Manufacturer of underground precast concrete pull boxes and enclosures
• Blackburn Mfg. Co.: Underground utility marking flags, warning tape and marking paint
• Clary Corporation: Traffic signal power UPS, power protection and battery back-up
• Component Products, Inc.: Traffic signal pedestal bases, aluminum and galvanized poles, polycarbonate and aluminum mounting hardware, decorative concrete light poles and fixtures
• Christy Concrete Products, Inc.: Reinforced concrete and Fibrelyte pull boxes and vaults
• Clifford of Vermont: Supplier of IMSA, communication and traffic signal cables and loop conductors
• Duro-Test Lighting: Manufacturer of traffic signal lamps and specialty lamps
• Econolite Traffic Control Products: Econolite controllers, traffic signals and equipment
• Edco Home Page: Power & communication lightning protection and filtering products
• Eberle Designs, Inc.: EDI Conflict Monitors, detectors and NEMA load switches and flashers
• Electro-Tech’s.: Designer and manufacturer of LED message and traffic signal devices
• Eltec Corporation: Digital time switches, coordinators, solar flashers, pager-controlled flashers
• Electronic Integrated Systems: Radar Traffic Detectors
• Encom Radio Systems: Spread spectrum wireless traffic control interconnect systems
• ForTel Traffic, Inc.: VCalm(tm), BumbleBee’s, LED’s and Other traffic control products.
• GELcore: L.E.D. traffic signal lamps
• General Traffic Controls: Traffic signal equipment and services for Iowa, Nebraska, N. Dakota & S. Dakota
• GRE America: GINA spread spectrum wireless modems
• IDEC Corporation PLC’s: IDEC Programmable Logic Controllers
• Information Display Co.: Radar Speed Display Systems
• Iteris: Iteris ITS & Vantage video detection systems
• K-Light Laboratories Corp.: Photometric testing, TLM-100 LED Traffic Light Meter
• Lightguard Systems: Flashing LED Pedestrian Safety Crosswalk System
• Lights by H & H: Suppliers of traffic signal lamps and quality lighting products
• McCain Traffic Supply: McCain Traffic Supply
• Midian Electronics: Wireless traffic detector & receiver
• National Sign & Signals: Illuminated street name signs, fiber optic and LED traffic signals and blankout signs
• Never Fail Loop Systems: Preformed Traffic Detection Loops
• Northwest Signal Supply, Inc.: Peek controllers, traffic signals and equipment, steel poles
• Naztec, Inc.: Naztec traffic control equipment
• Novax Industries, Inc.: Novax traffic control equipment
• OMJC Signal, Inc.: Purchaser & reseller of used and refurbished traffic signal and outdoor lighting equipment
• Online Power: Uninterruptible power supplies for traffic signals
• Optisoft: The Intelligent Traffic Signal Platform
• Pacific Lighting Sales, Inc.: Traffic signal equipment and hardware, Peek video detection, preemption systems; architectural, antique & roadway lighting and poles
• Peek Traffic: Traffic signal equipment sales and maintenance
• Pelco Inc.: Traffic signal brackets, mounts, cabinets, hardware
• Polara Engineering.: Manufacturer of durable, ADA-compliant push buttons: standard, vibro-tactile and audible
• Power Systems Group: Uninterruptible power supplies for traffic signals
• Precision Solar Controls: LED/Solar message signs and lane control products, LED traffic signals
• Premium Quality Lighting: Traffic signal lamps and specialty lighting
• Progressive Traffic Products: Traffic associated products design, manufacturing and sales
• Reagan Quality Lighting: Traffic signal lamps and specialty lighting
• Reno A&E Home Page: Reno detection systems
• RTC Manufacturing: Digital time switches, coordinators, preemption systems, solar flashers, detector racks
• Safetran Traffic Systems, Inc.: Manufacturer of 170/2070 transportation control equipment
• Silicon Constellations: Wireless lighting solutions for Pedestrian and Traffic Safety
• Sunnyvale General Devices and Instruments: Communication technologies of spread spectrum radio, video, fiber optic systems, digital telephone interfaces, and LAN/WAN products for the traffic signal industry
• Strongwell: Quazite utility enclosures, vaults, covers and equipment pads
• Synchronex: LED signs, traffic signal equipment and hardware, controllers and cabinets, video and loop detection systems, conflict monitors, loadswitches
• Tassimco Technologies: “Pioneer of the Countdown Pedestrian Signal”
• Temple, Inc.: Distributor and supplier of products and integration and technical services for the Intelligent Transportation Systems (ITS) and traffic control markets
• Tesco Controls: Utility meter enclosures for traffic signals & lighting, pump station & lighting controls, SCADA systems, traffic signal UPS’s, generator transfer panels
• Tomar Electronics: Strobecom optical traffic preemption & priority systems; strobes & lightbars
• Traffic Safety Corp.: Crosswalk Safety with Flashing Inset Lights
• Traffic Sensor Corp.: Conflict monitors, Caltrans 170 isolators, NEMA load switches and flashers
• Traffic Sign & Signal Covers Concepts: Custom manufactured sign and traffic signal covers for covering out-of-service signs, signals and pedestrian crossing heads
• Traffic Technology, Inc.: The “Unilight” single-lens L.E.D. traffic signal for the color vision impaired
• Trafficware: Trafficware software
• Traffix Devices: Construction signs, cones, barricades and vests
• Traficon: Video for Traffic Data Collection and Incident Detection
• U.S. Traffic Corp.: Loop detectors, conflict monitors, Traconex/Multisonics/TS2 controllers, traffic and ped signals, cabinets, UPS, LED message signs and trailers, radar speed displays
• Wapiti Micro Systems: 170/170/ITS traffic controller software
• Wavetronix: Offering the SmartSensor, the ITS industry’s ONLY auto-calibrating, auto-configuring traffic sensor
• Western Pacific Signal: Turnkey Advanced Traffic Management Systems (ATMS) and central control upgrades, LED signs, traffic signal equipment and hardware, controllers and cabinets, video and loop detection systems, conflict monitors, loadswitches
• Wilcox Sales: Audible pedestrian signals
• 3M Company: Canoga detectors and Opticom signal preemption equipment

You may find the following links useful.

• ATSSA: American Traffic Safety Services Association
• The ABAG Homepage: The Association of Bay Area Governments
• CALTRANS: The California Dept. of Transportation
• California Vehicle Code
• The FHWA Homepage: The Federal Highway Administration
• IMSA: International Municipal Signal Association
• ITE-ON-THE-WEB: The Institute of Traffic Engineers
• Access ITS America: Intelligent Transportation Systems of America
• ITS: Institute of Transportation Studies
• MSA: Maintenance Superintendent’s Association
• MUTCD: Manual of Uniform Traffic Control Devices
• The NTCIP Homepage: National Transportation Communications for ITS Protocol
• Pacific Gas & Electric “Green Book”: PG & E’s Online Requirements for Electrical & Gas Service
• Traffic Signals Index: A Collection of Links to Signal & Transportation-related Vendors, Contractors, Manufacturers and Organizations
• The TRB Homepage: The Transportation Research Board
• USA: Underground Service Alert-North
• The U.S.D.O.T.: The United States Dept. of Transportation