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<br />Direction of Approach <br /> <br />The regional travel demand forecasting model was used to estimate the future "direction of <br />approach" of the traffic to the site. Figure 3 shows the overall direction of approach. <br />Approaches to specific portions of the site were estimated separately to provide a more detailed <br />breakdown of traffic flow. The traffic forecasts assume that 10 percent of the traffic remains <br />within the AUAR study area. In addition, the forecast model estimates an additional five percent <br />of traffic would remain in the Rosedale area. These, plus other minor traffic approaches account <br />for the difference between the total 100 percent and the percentage distributed to the major <br />traffic approaches. <br /> <br />Traffic Volumes <br /> <br />Figure 4 shows the existing daily traffic volumes and the forecast year 2020 traffic volumes for <br />roadway segments in the study area. Forecast volumes on the regional highway system are <br />affected by the use of the "equilibrium assignment" method of traffic assignments, which adjusts <br />travel patterns based on available capacity and the availablility of alternate routes. <br /> <br />Twin Lakes AUAR <br />Traffic, Air and Noise Analysis <br /> <br />-14. <br /> <br />SRF Consulting Group, Inc. <br />May 3. 2001 <br />