Applicant's Addendem to TIAR 12.12.2022

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KTL Kona Villas November 2021 Final TIAR Addendum E-B EMB" F=m Page International 12/12/2022 Innovate I Adapt I Sustain northbound left was projected to operate at LOS E or worse for all future years and the southbound through was projected to operate at LOS F from 2039. • Kuakini Highway was recommended to remain unsignalized to maintain minimal delay on Route 11. • At the Lako Street intersection, the eastbound sight distance should be checked before changing the Lako Street approaches to have permitted left turns. It was further noted that following HDOT's Route 11 widening from Henry Street to Kamehameha III Road all movements at Lako Street would operate at an acceptable LOS with split phasing. III. Route II at Nani Kailua Drive The signalized Nani Kailua Drive intersection with Route 11 is located approximately 1.5-miles north of the Royal Vistas Roadway and was not originally counted and analyzed as part of the November 2021 Final TIAR. DPW requested additional discussion be included about traffic conditions along Route 11 at the intersection with Nani Kailua Drive in comments from September 28, 2022. This intersection has been noted as a bottleneck and cause of traffic delays along Route 11. One reason for this is the traffic signal split phasing for the Nani Kailua Drive approaches. Split phasing, especially when used on minor streets, results in a reduction in effective green time on the major approach, increasing delay for vehicle movements on the mainline. Changing intersection traffic signal phasing would result in more effective green time for vehicles traveling through along Route 11. Another project that can improve traffic operations at Nani Kailua Drive is the Nani Kailua Drive extension. The Master Plan for Kailua Kona (April 2014) Land Use Master Plan (see Figure 3) shows the location of the Nani Kailua Drive extension to Kuakini Highway and Oneo Lane, connecting the Nani Kailua Drive extension to Alii Drive. Roadway connectivity will be improved with this project by providing a mauka-makai connector road. Currently, Hualalai Street is the only mauka-makai street connecting Route 11 to Kuakini Highway east of Henry Street.