Agenda - Council - 01/26/2021 - Laserfiche WebLink

Home

3. Forecasted Traffic a. Site Traffic Forecasting A trip generation analysis was performed for the development site based on the methods published in the Institute of Transportation Engineers (ITE) Trip Generation Manua(, 10t" Edition. Trip generation rates are also based on local data collected by Spack Solutions. The ITE manual compiles studies from across the country to provide a national average traffic for various land uses. Spack Solutions collects current average traffic volumes for various land uses in the Twin Cities regional area for use in our studies. Local data is considered more relevant than the ITE national data as it is generally newer and accounts for our area's specific characteristics and driving habits. Per the procedure in the Trip Generation Manual, local trip generation data is used when possible and supplemented with national ITE data when local data is not available. The resultant new trips generated by the proposed development are shown in Table 2. A detailed trip generation table showing the exact breakdowns is provided in the Appendix. Table 2 — New Trip Generation Land Use Description & Daily AM Peak Hour PM Peak Hour Code - Size In Out Total In Out Total In Out Total Source' Single Family Detached 210 - ITE Housing 779 779 1558 ' 31 91 122 102 61 163 (165 units) Single Family Detached 210 - ITE Housing 368 368 736 14 43 57 50 29 79 (78 units) Totals Using ITE Rates 1,147 11147 2,294 45 134 179 152 90 242 Single Family Local Detached Housing 744 744 1488 ' 29 75 104 83 62 145 (165 units) Detached Local Townhomes 212 212 424 9 27 36 26 15 41 (78 u nits) Totals Using Local Rates 956 956 1,912 38 102 140 109 77 186 -' Local = Trip generation data collected by Spack Solutions. As shown in Table 2, the local and ITE daily trip generation rates are similar. However, the ITE rates produce higher trip generation results than local data when observing Traffic Impact Study 5 Riverstone South Development S P.a,,c,, ',k