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#88601 <br /> Transportation Impact Report <br /> April 11, 1986 066 <br /> Page Four <br /> Existing 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 float conditions <Normally representative of rural <br /> operations) . <br /> Level of Service Descra,t�tion Flow in both directions <br /> per hour <br /> A Free flow 400 cars <br /> B Stable flow 900 cars <br /> C Stable flow 1400 cars. <br /> D Approaching unstable <br /> flow 1700 cars <br /> E Unstable flow 2000 cars <br /> F Forced flow widely variable <br /> •v See Appendix B for definitions. <br /> Determination of Intersection Capacity: <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. Table II gives <br /> the capacity ranges of an intersection for each level of <br /> service. <br /> Intersection Capacity by Level of Service <br /> Level. of Service Range of Capacity (VPH) <br /> A Low High <br /> A <br /> B <br /> 0 900 <br /> C 941 1050 <br /> D 1051 1200 <br /> 1201 1350 <br /> E 1351 1500 <br /> F (Special case) 1500 <br /> r <br />