how does good road infrastructure change the quality of life explain with example
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The selection of specific measures of infrastructure performance is central to the assessment process. The committee recommends that measures be used that span the three broad dimensions of effectiveness, reliability, and cost, but there are many more detailed concerns that fall within these principal dimensions.
The committee's general measurement framework is the large two-part matrix or table illustrated in Figure 4-1. Rows represent the projects, subsystems, or elements that make up the infrastructure systems being assessed, for example, transportation or water supply, specific transit lines, or landfill operations. Columns in the first part of the table represent the system inventory: indicators of the size, geographic extent, annual costs, employment, and other characteristics of the infrastructure system under consideration. Columns in the second part of the table depict measures of the various aspects of performance selected by stakeholders and decision makers and measured in the assessment process. Taken as a whole, the two-part table presents the results of applying the assessment process described in Chapter 3.
This chapter presents many examples of inventory and performance measures. Because performance should be assessed with the involvement of stakeholders—infrastructure's owners, operators, users, and neighbors—the specific set of measures used may differ from place to place and from time to time, as discussed in chapters 2 and 3, although a desire for comparability across regions may necessitate inclusion of common basic measures. The committee recommends that local agencies with responsi-
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