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Ii <br /> to the freeways. For example, the computer assignment directs all the <br /> southbound 1-5 trips to Main Street. In reality, this demand will be <br /> distributed between both Main Street and Broadway. Similarly, all <br /> southbound Route 55 Freeway trips are assigned to the Santa Ana Freeway <br /> (via southbound Main Street) then to southbound Route 55. Origin and <br /> Destination information obtained in the Phase One TSIP Study indicates <br /> this travel demand is distributed among both the I-S and Route 22 <br /> Freeways, both of which interchange with the southbound Route 55 <br /> Freeway. The MMTS/SATC's assignment model has a capacity restraint <br /> feature which rontinually monitors volume to capacity ratios and assigns <br /> traffic around bottlenecks (such as the Main/La Veta Intersection). <br />it Consequently, appropriate refinements were necessary to use the computer <br /> assignment. <br /> A diagram of the adjusted trip assignment for the Fashion <br /> Square entrance/exit locations is presented in Figure 26. Examination <br /> of this assignment reveals the area's revised circulation system enables <br /> approximately half (46.9 percent) of the Fashion Square traffic to avoid <br /> Main Street altogether while another one quarter (24.2 percent) only <br /> crosses Main Street in an east-west direction. Less than one-third of <br />I.; trips generated by Fashion Square (28.9 percent) will utilize Main <br /> Street for direct access into/out of the center. The trips assigned to <br />t the Main Street entrance/exits of Fashion Square, while shown as <br /> concentrated at Town and Country Road, will be distributed among a <br /> number of driveways situated along the Fashion Square/Main Street Center <br />-LI <br /> frontage. <br />L An intersectional capacity analysis using the adjusted Fashion <br /> Square driveway assignment was conducted to demonstrate the relative <br /> impact of superimposing the Fashion Square development on two key <br /> intersections immediately surrounding the site - Main at La Veta and <br /> Main at Town and Country. It must be cautioned that this is an exercise <br /> for comparison purposes only and does not necessarily reflect a <br /> realistic portrayal of future conditions since new arterials and freeway <br /> ramps to be constructed will dramatically alter the current travel <br /> patterns at these two locations. <br />I <br /> 99