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A.4 Communication System Support Section A.3 presents example urban, suburban, metropolitan, and rural ITS communication system designs and cost estimates to procure and install communication systems. This section win present methodologies to estimate the costs to operate the communication system and calculate the life cycle costs (LCC). Example L~CC estimates are presented Hat illustrate typical trade-offs encounters in ITS communication system design. This section addresses Me following: . . General Overview: Ma~nt~nabiiity of advanced communication systems Reliability, availability, and maintainability planning and estimating; Maintenance personal staff planning and es~nadng; Spare parts planning and estimating; Test equipment requirements; and Life cycle cost es~nadng methodologies and examples. A.4.1 General Overview: Maintainability of Advanced Communication Systems A major concern of jurisdictions relating to the deployment of advanced communications technology is ability to maintain new technology. This issue involves several sub-issues including: · Ease of maintenance, a basic issue since it impacts training; · New gaining of the maintenance staff; · New test equipment requirements and availability; and · Spares requirements and associated cost of availability. To provide a basis for We discussion of maintainability, it is important to understand Mat by advanced communications technology we mean that which is not in experimental form, has been L:\NCHIWha~` NCHRP3-51 · Phase2FmalReport A4-1
