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<br />El Camino Real Traffic u,gnal System City of Redwood City <br /> The spectrum analyzer is an electronic test equipment with a visual display output <br /> similar to that of an oscilloscope. The display shows radio-frequency power level as <br /> a function of frequency. <br /> Potential interference to radio receivers, both in-band and out-band interferences, will <br /> be invesdgated. Future use of spread spectrum radios in the area will be projected and <br /> an evaluation of potential interference will be made. <br /> Terrestrial microwave links have been in use for some time primarily as a data and <br /> voice communications trunk between offices and/or remote work centers. In some <br /> cases, microwave links communicate with traffic signal controllers or transmit video <br /> information. <br /> Microwave signals radiate through the atmosphere along a 1ine-of-sight path between <br /> the transmitting and receiving antennas. A detailed comparison will be made between <br /> radio and microwave for their applicability and reliability for this project. Table 2 is <br /> a sample characteristics of these two wireless technologies that MMA employees for <br /> the feasibility study for the City of Petaluma, California, and numerous other projects <br /> throughout California. Similar characteristics, applicable to this corridor will be <br /> developed and analyzed for this project. <br /> . Central System Network - Communication links to potential users such as the involved Cities <br /> and Caltram is potentially required. It is envisioned that the central system at Caltrans need to <br /> connect to field masters. Work stations may be located at City Hall's via telephone connection <br /> to the central system. <br />TASK 2: CONCEPT DESIGN <br />A conceptual master plan of communication will be prepared. The master plan will clearly identify the <br />communication media proposed for each interconnect link between each of the study signalized intersection <br />and recommendations related to communication links between field masters and central traffic control system, <br />as appropriate. Any hardwire interconnect, will be the repeater locations or other key features of the <br />masterplan. <br />The master plan will be prepared based on a through review of existing conditions and alternatives analysis <br />in terms of technology as well as costs and maintenance involved. Several alternatives will be developed as <br />part of conceptual plan study and a workshop will be presented to agency staff to discuss and reach consensus. <br />TASK 3: MODIFY CALTRANS DOCUMENTATION <br />The original Project Study Report (PSR) and Project Report (PR) for the El Camino Real Interconnect Project <br />was prepared by Caltrans. These documents will be updated to reflect the change in the project limits and <br />design. The revisions are elimination of the Woodside Road intersections, increasing the number of <br />intersections on El Camino Real and changing the technology to be used to interconnect the traffic signals. <br />It is possible that these changes can be accommodated through an addendum to the existing PSR and PRo The <br />project should remain Categorically Exempt under CEQA and no other changes to the project are anticipated. <br /> Meyer, Mohaddes Associates, Inc. <br /> 28 <br /> 'i <br />