- Advantec Consulting Engineers - Transportation engineers and intelligent traffic management systems experts.
- American Signal Company (AMSIG) - Manufacturer of stationary and portable electronic changeable message signs and sign systems.
- Athens Technical Specialists Inc. - A manufacturer of electrical test equipment for the traffic signal, highway, roads, and custom design markets with information on products, training, distributors, the company and contacts.
- Blakedale Verge and Marker Posts - Manufacturer and supplier of a complete range of distance marker posts and verge markers.
- Cloverleaf Corporation - Manufacturers representative for traffic control and traffic safety systems. Products include impact attenuators, pavement marking materials, and decorative surfacing treatments.
- Component Products - Manufacturer of traffic signal poles, shrouds, polycarbonate framework, and related products.
- Elmore Group - Traffic and transportation management solutions including public lighting, traffic control, intelligent transportation systems and access control. Ireland.
- GNR Technologies - Design and manufacture infrastructure and traffic safety products from recycled rubber. Products include speed bumps and parking curbs.
- Haldo - Manufacturer of traffic management products, specializing in traffic bollards and cones. Includes a listing of world distributors and an online store for automotive and safety clothing products.
- Inline Barricades - Manufacturer and designer of barricades and barriers for crowd and vehicle control including police-style, steel, plastic, and portable barricades.
- JAMAR Technologies - Manufacturer of traffic counters, traffic analysis software, distance measuring instruments, and related products.
- JBC Safety - Supplies traffic control equipment including traffic cones, barricade boards, pavement markers, and related products.
- Lakeside Plastics, Inc. - Manufacturer of traffic cones, barrels and other related safety items.
- Maxiforce 1 - Collapsible bollards to help control pedestrian and automobile through traffic.
- Micrologic Systems Inc. - Manufactures products for the transportation and utility industries, such as computerized toll and fare collection systems, and vehicle tracking systems.
- Polara Engineering - Manufacturer of accessible pedestrian signals that aid the elderly and disabled to cross busy city intersections. Information on models and ordering.
- Quixote Corporation - Manufactures impact-absorbing highway and truck-mounted crash cushions, vehicle arresting systems, and related highway safety products, including highway advisory radio systems to inform motorists of accidents and traffic delays. (Nasdaq: QUIX).
- Roadtech Manufacturing - Manufacture traffic safety equipment including traffic cones, barricades, and security convex mirrors.
- RoadVision Technologies - Manufactures Highway Beacon, the snowplowable raised reflective pavement marker.
- Telephonics Corporation - Specializing in communications systems for aircraft and mass transit and other traffic management systems.
- Tolltex, Inc. - Provides toll collection systems and services including lane traffic signals, canopy traffic signals, receipt printers, plaza and host computer systems, and related products.
- Traffic and Parking Control Co., Inc. (TAPCO) - A manufacturer of traffic and parking control signs, pavement markings and related products.
- Traffic Control Devices, Inc. - Installers and maintainers of traffic signal equipment, signs, and intelligent transportation systems. Includes contact locations and employment opportunities.
- Traffic Control Products Co., Inc. - Road and construction signs and other traffic safety and control products.
- United Toll Systems - Offering toll systems, facilities management, and road and bridge construction solutions.
- Vialis BV - The Netherlands. Suppliers of consultancy, services and systems for optimum processing of automobile and rail traffic flows. Part of the Volker Wessels Group. English and Dutch.
- Vistaplan International - Manufacturer of security, drawing, and storage system products.
- Work Area Protection Corporation - Manufacturer of traffic control and work zone safety products.
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