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30 <br /> 2040 MTP and CTP <br /> Alternatives — Performance Measures <br /> Purpose of Performance Measures <br /> Performance Measures provide a general indicator from a variety of perspectives such as <br /> mobility, travel time, congestion, mode choice, and air quality. The measures are not <br /> specific to a particular roadway or travel corridor but instead cover the entire <br /> transportation system, and therefore are useful for comparing the overall efficiency and <br /> effectiveness of the different transportation Alternatives. Most of the data used for <br /> calculating the Performance Measures comes from the Triangle Regional Model (TRM), <br /> which is a travel demand model that forecasts future travel statistics based on a set of <br /> assumptions concerning the highway network, transit service and other transportation <br /> facilities. <br /> Presentation of Performance Measures <br /> The first section is a table that presents all the Performance Measures for all of the <br /> Alternatives. Next a series of graphs compare key Performance Measures. <br /> Performance Measures 2-1 <br />