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Existing communication resources and constraints
Communications media for traffic control systems
alternative communication application in traffic CATV CCTV Celsius central computer Central to multiple coax coaxial cable communication requirements communication technologies communications media communications subsystem communications trade-off analysis conduit constraints control center data communications design and installation digital data channels downloading and uploading elements EXECUTIVE SUMMARY existing communication facilities Federal Highway Administration FHWA fiber optic field hardware field master Furthermore infrared atmospheric transmission Integrated Communications jurisdiction laser leased line metres cubed microwave millimetres number of channels Operations Plan Optical infrared atmospheric optical signal overall traffic control physical connection Radio-Based Systems ramp meter responsible entities short tons signal system special features square miles successful implementation system configuration system with downloading techniques telephone company traffic control applications traffic control communications traffic control systems traffic engineering analysis traffic signal transmitted urban area variable message signs Video field drops video transmissions Voice Central voice-grade channels zonal processors