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408 <br /> August 5,2020 <br /> Mr.Chuck Edwards,PE,District Engineer <br /> Page 3 of 15 <br /> Reference: Research Triangle Logistics Park TIA Supplement <br /> Old NC 86 & 1-40 Eastbound Ramps <br /> Similar to the adjacent ramp intersection, the TIA that for Settler's Point included a signal warrant analyses <br /> for this intersection. It was noted that warrants were met for signalization in the no build condition. Due to <br /> the data collection restrictions caused by the Covid Pandemic, the same data were used for the Research <br /> Triangle Logistics Park, so the same results would apply to this study. <br /> A signal was recommended at this location due to the excessive delays for the overall intersection and the <br /> eastbound approach in the no-build condition. There is a significant southbound left turn movement <br /> (exceeds 500 under the existing condition)coming from Hillsborough and the Waterstone Development. <br /> The reported delays and queues from Synchro are assuming a very conservative analysis with protected <br /> only movements and optimized splits. With the proposed left-over at the Service Road, a greater amount of <br /> green time can be given to the southbound left since it will not be an issue to queue beyond the Service <br /> Road. Additionally, it should be noted that the TIA assumed full build out of Waterstone while the <br /> development is only partially built out. Therefore, delay estimates are very conservative. The 1-3306A <br /> project will install additional lanes while the U-5845 project will install a traffic signal and additional turn <br /> lanes at this location. <br /> Therefore, based on this additional information, we recommend that the developer install a temporary signal <br /> with wood poles at this location to accommodate traffic until the planned projects construct additional turn <br /> lanes and a signal in the final configuration can be installed. <br /> Old NC 86 and Service Road Intersection: <br /> Based on the current spacing of intersections and issues noted , the development will revise the access at <br /> this location to provide a right in/right out with a left over into the site. Just north of the service road, there <br /> is a residential parcel that has a property line which appears to extend almost to the edge of pavement and <br /> may prohibit widening of pavement in this area. This is shown on the attached public hearing map. <br /> Therefore, the following improvements are recommended at this location assuming that they can be <br /> accomplished within the existing right of way by shifting the existing lanes and restriping the pavement. <br /> • Restripe Old NC 86 in the vicinity of the Service Road to provide the following within the existing edges <br /> of pavement: <br /> — An exclusive northbound left-turn lane with the amount of full-width storage with appropriate <br /> transitions to the greatest extent possible within the existing pavement. <br /> — An exclusive southbound right-turn lane with 100 feet of full-width storage or a lesser amount to the <br /> greatest extent possible with appropriate transitions within the existing pavement. <br /> Design with community in mind <br />