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RESEARCH TRIANGLE LOGISTICS PARK TRAFFIC IMPACT ANALYSIS <br />Traffic Volumes <br />June 4, 2020 <br /> 13 <br /> <br />3.0 TRIP GENERATION <br />Trips were estimated using the 10th Edition of the Institute of Transportation Engineers (ITE) Trip Generation <br />Manual3. The site is expected to consist of 2,251,200 square feet of industrial warehouse building. Table 2 shows the <br />number of anticipated trips that will be generated by the site of the proposed development (Daily, AM Peak, and PM <br />Peak entering and exiting). <br />Table 2: Site ITE Trip Generation <br />Land Use Size <br />(SF) Daily Trips AM Peak Hour Trips PM Peak Hour Trips <br />Total Enter Exit Total Enter Exit <br />Warehouse (LUC 150) 2,251,200 3,648 320 247 73 326 88 238 <br />The NCDOT Rate vs. Equation Spreadsheet (effective July 1, 2018) limits the use of Warehousing (land use code <br />150) to 2,000,000 square feet. As the proposed development is in-excess of this limit, the approach to trip generation <br />was to generate trips separately for 1,000,000 and 1,251,200 square feet. This methodology was approved by <br />NCDOT on the scoping forms contained in the Appendix. <br />4.0 TRAFFIC DISTRIBUTION <br />4.1 SITE TRIP DISTRIBUTION <br />In order to accurately determine the effect of the proposed development on the surrounding roadway network, an <br />estimate of the expected distribution of traffic entering and exiting the site is needed. The below percentages were <br />taken from the 2017 Settler’s Pointe TIA and are used in this study for the AM and PM peak hours. Site trip <br />distribution and site trip assignment is shown on Figure 9 and Figure 10; respectively. <br />x 30% to / from the east on I-40; <br />x 25% to / from the west on I-40; <br />x 20% to / from the north on Old NC 86; <br />x 15% to / from the south on Old NC 86; <br />x 5% to / from the east on Waterstone Drive; and <br />x 5% to / from the west on Davis Road. <br />5.0 TRAFFIC VOLUMES <br />Turning movement counts were taken from the Settler’s Pointe TIA. The data was collected on Tuesday, October 18, <br />2016 by GreenLight Traffic Services, Inc. The Settler’s Pointe TIA then balanced the counts by adjusting the through <br />movements on Old NC 86 upward to create a balanced, conservative network. These counts and figure from the <br />prior study are contained in the Appendix. <br /> <br />136