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Transportation Impact Study for Hidden Canyon Residences & Preserve <br />March 2023 Page | 28 <br />4.0 PROJECT CONDITIONS <br />The impacts of the proposed project on the multi-modal transportation system are discussed in this <br />chapter. Motor vehicle traffic impacts are assessed based on the volume of motor vehicle traffic generated <br />by the project. A comparison of intersection LOS with and without the project is conducted to assess <br />potential impacts. <br />The volume of peak-hour motor vehicle traffic added to the roadway system and study intersections is <br />forecasted using a three-step process. <br />• Trip Generation – Forecasts the amount of traffic added to the roadway network, <br />• Trip Distribution – Predicts the direction of travel to and from the project site <br />• Trip Assignment – The new vehicle trips are assigned to specific street segments and intersection <br />turning movements <br />4.1 PROJECT VEHICLE TRIP GENERATION <br />Ponderosa Homes II, Inc. proposes to develop the site with 30 single-family detached houses, 28 new <br />dwellings (lots 1 to 28) and replacement of the two existing dwellings (lots 29 and 30). Of note, previous <br />iterations of the development program included 31 units (29 new and two existing) as opposed to the <br />current 30 units. To be consistent with previous iterations of this TIS and thus presenting a conservative <br />assessment, the analysis of the “plus Project” scenarios includes the additional new unit. <br />TJKM developed estimated project trip generation for the proposed project based on published trip <br />generation rates from the Institute of Transportation Engineers’ (ITE) Trip Generation Manual (10th Edition). <br />TJKM used published trip rates for the ITE land use Single Family Detached housing (ITE Code 210). <br />Published trip rates from land use of Public Park (ITE Code 411) was utilized to obtain projects trips for the <br />proposed 70-acre park. <br />Table 5 shows the trip generation expected to be generated by the proposed 29 net new single-family <br />residences and 70-acre park space. The two existing lots that would be replaced would not be expected to <br />contribute to a net increase in traffic. The proposed project is expected to generate approximately 407 daily <br />vehicle trips including 22 weekday a.m. peak hour trips (six inbound and 16 outbound), and 56 weekday <br />p.m. peak hour trips (33 inbound and 23 outbound). <br />Table 5: Project Vehicle Trip Generation Forecast <br /> <br /> <br />Rate Trips Rate In %In Out Total Rate In %In Out Total <br />Single Family Residential 1 210 29 dwellings 9.44 274 0.74 25 5 16 21 0.99 63 18 11 29 <br />Park (Proposed EBRPD Park-Parcel B)411 70.3 acres (2)133 0.02 59 1 0 1 (3) 55 15 12 27 <br />407 6 16 22 33 23 56 <br />3. PM Peak Hour vehicle trips for park based on fitted curve equation: (70.3 acres x 0.06) + 22.6 = 27 p.m. peak hour vehicle trips. <br />Total Vehicle Trips <br />Source - Institute of Transportation Engineers (ITE) Trip Generation Manual , 10th Edition, 2017. <br />Notes: <br />1. Land Use Code 210 (Single Family Detached) was used as ITE Trip Generation Manual 10th Edition does not provide a rate for Single Family Attached <br />2. Average weekday vehicle trips for park based on fitted curve equation: (70.3 acres x 0.64)+ 88.46 = 133 weekday vehicle trips. <br />Land Use ITE <br />Code Size Weekday AM Peak Hour PM Peak Hour <br />. ,