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3. Forecasted Traffic <br />a. Site Traffic Forecasting <br />A trip generation analysis was performed for the development site based on the <br />methods published in the Institute of Transportation Engineers (ITE) Trip Generation <br />Manual, 10th Edition. Trip generation rates are also based on local data collected by <br />Spack Solutions. <br />The ITE manual compiles studies from across the country to provide a national <br />average traffic for various land uses. Spack Solutions collects current average traffic <br />volumes for various land uses in the Twin Cities regional area for use in our studies. <br />Local data is considered more relevant than the ITE national data as it is generally <br />newer and accounts for our area's specific characteristics and driving habits. Per the <br />procedure in the Trip Generation Manual, local trip generation data is used when <br />possible and supplemented with national ITE data when local data is not available. <br />The resultant new trips generated by the proposed development are shown in <br />Table 2. A detailed trip generation table showing the exact breakdowns is provided <br />in the Appendix. <br />Table 2 - New Trip Generation <br />Land Use <br />Code - <br />Source' <br />Description & <br />Size <br />In <br />Daily <br />Out <br />Total <br />AM <br />In <br />PeakHour <br />Out <br />Total <br />PM <br />In <br />Peak Hour <br />Out <br />Total <br />210 - ITE <br />Single Family <br />Detached <br />Housing <br />(165 units) <br />779 <br />779 <br />1,558 <br />31 <br />91 <br />122 <br />102 <br />61 <br />163 <br />210 - ITE <br />Single Family <br />Detached <br />Housing <br />(78 units) <br />368 <br />368 <br />736 <br />14 <br />43 <br />57 <br />50 <br />29 <br />79 <br />Totals Using ITE Rates <br />1,147 <br />1,147 <br />2,294 <br />45 <br />134 <br />179 <br />152 <br />90 <br />242 <br />Local <br />Single Family <br />Detached <br />Housing <br />(165 units) <br />744 <br />744 <br />1,488 <br />29 <br />75 <br />104 <br />83 <br />62 <br />145 <br />Local <br />Detached <br />Townhomes <br />(78 units) <br />212 <br />212 <br />424 <br />9 <br />27 <br />36 <br />26 <br />15 <br />41 <br />Totals Using Local Rates <br />956 <br />956 <br />1,912 <br />38 <br />102 <br />140 <br />109 <br />77 <br />186 <br />1 Local = Trip generation data collected by Spack Solutions. <br />As shown in Table 2, the local and ITE daily trip generation rates are similar. However, <br />the ITE rates produce higher trip generation results than local data when observing <br />Traffic Impact Study <br />Riverstone South Development <br />5 <br />Vi Spa& <br />