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Hale Ola O Mohouli Affordable Residential Development Transportation Impact Assessment Report 4.0 SUMMARY AND RECOMMENDATIONS 4.1 Summary The proposed Hale Ola O Mohouli development is a proposed affordable residential development that expands the existing Mohouli Senior Residences in Hilo. It will contain up to 90 multi-family residential units and is located on Mohouli Street between Komohana Street and Kukuau Street. The proposed Hale Ola O Mohouli development is projected to generate 48 vehicles per hour(vph) during the AM peak hour with 10 vph inbound and 38 vph outbound. In the PM peak hour, it is expected to generate 68 vph with 44 vph inbound and 24 vph outbound. The additional traffic generated by the proposed Hale Ola O Mohouli development is forecasted to have minor impacts on intersection operations at the intersections in the vicinity of the proposed development. A proposed driveway with traffic movements restricted to right-in/right-out movements will be effective in reducing traffic activity on Kupuna Place. The existing roadway infrastructure would be able to accommodate traffic generated by the proposed Hale Ola O Mohouli development. 4.2 Evaluation of Traffic Signal Warrants at Kupuna Place The projected Year 2025 peak hour turning movements were used to evaluate the need for a traffic signal at the Mohouli Street/Kupuna Place intersection. Currently, this intersection operates as a two-way STOP-sign controlled intersection with the STOP- sign on the Kupuna Place approach. Figure 16 and Figure 17 show graphic evaluations of the peak hour traffic signal warrant as documented in the Manual on Uniform Control Devices (MUTCD), 2009 as revised, for the projected year 2025 AM peak hour and the 2025 PM peak hour time periods.. As shown, in Figure 17, the projected year 2025 PM peak hour volumes are closer to warranting a traffic signal at the Mohouli Street/Kupuna Place intersection than the projected year 2025 AM peak hour volume. Even for the projected year 2025 PM peak hour, the peak hour traffic signal warrant in not satisfied. The projected year 2025 PM peak hour traffic on Mohouli Street is 910 vehicles per hour. To satisfy the peak hour traffic warrant, this volume would need to increase to approximately 1,000 vehicles per hour, a 10 percent increase. Given the fairly stable traffic volume level on Mohouli Street between year 2007 and year 2020, it is anticipated that this 10 percent increase would require growth over a substantial number of years or would be caused by a dramatic increase in development in the vicinity of the intersection. A=COM 24 November 2020