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i~. ___ <br /> Trip Distribution and Assignment <br /> Distribution and assignment of trips generated by the Fashion <br /> Square project was obtained from the regional model. Figure 24 presents <br /> the 1995 travel forecasts obtained from the TSIP/SATC Model for maximum <br /> development of the Main Street/Town and Country area. A "selected link <br /> analysis1' was performed on the highway assignment for the critical <br /> afternoon peak period. Two freeway flow conditions were examined. <br /> First, the freeway was treated as if sufficient capacity were available, <br /> Li and/or ramp metering were provided, which permitted the freeways to <br /> operate at near optimum flow rates, i.e., 35-45 miles per hour. <br /> U Secondly, the freeway assignment resulting from a congested (stop and <br /> go) condition on the freeways was examined. <br /> Li <br /> The typical trip length for travel associated with Fashion <br /> Square was also investigated. Analysis shows that 57.2 percent of~the <br /> trips to and from Fashion Square will be less than 5 miles in length. <br /> Similarly, 95.9 percent of all trips will remain within Orange County <br /> Li whereas only 4.1 percent will travel to/from destinations beyond County <br /> boundaries. This information is corroborated by the Orange County <br /> L Transportation Commission's employment study of Main Street which <br /> revealed 41 percent of existing employees live within five miles and 84 <br /> percent live within a 10 mile radius of the Fashion Square. With <br /> several commercial centers located close by, it appears reasonable that <br /> most shopping trips will be less than five miles in length. The <br /> Ii.- <br /> combination of short shopping trips with the employment based trips show <br /> good correlation between the model output and survey data and provides <br /> reasonable assurance that the model's forecast of trip lengths is <br /> reliable. <br /> The distribution of inbound and outbound trips from Fashion <br /> Il Square during the critical PM peak period is presented in Table 11. <br /> * This table shows that 72.3 percent of the highly directional outbound <br /> peak period Fashion Square traffic is oriented directly to the freeways. <br /> This demonstrates the importance of providing direct freeway access from <br /> the site. <br /> 90