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M Honoka'a Plantation Cottages <br /> Traffic Assessment Report May 22, 2020 <br /> C. Methodologies <br /> 1. Capacity Analysis <br /> The highway capacity analysis, performed in this study, is based upon procedures <br /> presented in the Highway Capacity Manual, 6th Edition (HCM), published by the <br /> Transportation Research Board. HCM defines the Level of Service (LOS) as "a <br /> quantitative stratification of a performance measure or measures representing quality <br /> of service." HCM defines the six (6) Levels of Service from the traveler's perspective, <br /> ranging from the best LOS "A" to the worst LOS "F". LOS translates the complex <br /> mathematical results of the highway capacity analysis into an A through F grading <br /> system for the purpose of simplifying the roadway performance for decision makers. <br /> The Hawaii County Code Chapter 25, Section 25-2-46 "Concurrency <br /> Requirements" define LOS's "A", "B", "C", and "D" as acceptable Levels of Service. <br /> LOS's"E" and "F" are considered to be worse than acceptable Levels of Service. The <br /> intersection LOS is primarily based upon average delay (d) in seconds per vehicle <br /> (sec/veh). Table 1 summarizes the HCM LOS criteria. <br /> Table 1. Intersection Level of Service Criteria—Unsignalized Control (HCM) <br /> LOS Delay d (sec/veh) Description <br /> A d<_10 Control delay is minimal. <br /> B <br /> 10<d .15 Control delay is not significant. <br /> C 15<d<_25 Stable operation. Queuing begins to occur. <br /> D 25<d<35 Less stable condition. Increase in delays, decrease in <br /> travel speeds. <br /> E 35<d<_50 Unstable operation, significant delays. <br /> F d>50 High delays, extensive queuing. <br /> Synchro is a traffic analysis software that was developed by Trafficware. Synchro <br /> is an intersection analysis program that is based upon the HCM methodology. <br /> Worksheets for the capacity analysis, performed throughout this report, are compiled <br /> in the Appendix. <br /> 2. Trip Generation <br /> The trip generation methodologyis based upon generally accepted techniques <br /> developed by the Institute of Transportation Engineers (ITE) and published in the Trip <br /> Generation Manual,10th Edition.The Hawaii County Code"Concurrency Requirements" <br /> 3 <br />