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• <br /> Traffic Impact Report, 2 0t <br /> February 24, 1986 <br /> Page Four <br /> • <br /> Exiatina Road Conditions: <br /> Per- the NCDOT manual "Highway Capacity",, levels of service <br /> and maximum service volumes on a two-lane highway under uninter- <br /> rupted flow condition (Normally representative of rural <br /> operational.. <br /> Flow; in- both: directions. <br /> Level of Service Description per hour <br /> Free flow 400 cars <br /> • Stable flow 900 care <br /> Stable flow= - 1400 care <br /> D Approaching unstable <br /> flow 1700 cars <br /> Unstable flow 2000 cars <br /> Forces flow widely variable. <br /> * See: Appendix A for definitions. <br /> Determination of Intersection Ca itv.ac • <br /> » <br /> The intersection- capacity analysis for use in site planning <br /> application is based on the "Critical Movement Summation" , <br /> technique developed by McInerney- and Petersen. Tables. II. gives <br /> the capacity ranges- of an. intersection for each level of <br /> service. <br /> r- <br /> TABLE it <br /> Intersection Capacity by Level of Service <br /> Level of Service Ranve of Capacity (VPH) <br /> . Low High, <br /> A z_ 0. 900 <br /> B 901 1050 <br /> C 1051 1200 <br /> 0 1201 1350 <br /> 1351 - 1500 <br /> F -(Special. case) 1500 <br /> • <br />