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COPY NCOOT <br />5) Level E: unstable flow, with low operating speeds and <br />volumes near or at capacity. <br />6) Level F: "traffic jam" conditions, with frequent <br />interruptions and breakdown of flow. Volumes below <br />capacity exist along with low operating speeds.(2) <br />As stated above, the effect of speed on traffic is a factor that <br />determines the type of level of service given to the motorist. <br />The term used for this speed effect is the overall travel speed, <br />which is the total distance traveled divided by the total time <br />required, including all traffic delays. <br />The recommended minimum levels of service for roads and highways <br />included in the proposed Orange County Thoroughfare Plan are given <br />in Table 4. <br />Table 4 <br />Minimum Levels of Service for Thoroughfares <br />in Orange County <br />Facility <br />Major and <br />Minor Arterials <br />Major Collector Roads <br />Minor Collector Roads <br />Overall Travel Speed <br />During Peak Traffic Conditions <br />610- MEIWN <br />45 - 50 MPH <br />40 MPH <br />According to most motorists, the optimum safety and operation <br />of most roads would exist through widening all existing and <br />building all new roads to provide a minimum lane width of 12 feet. <br />However, to build such roads would.be impractical considering <br />overall statewide needs and available highway revenues. <br />Therefore, minimum tolerable widths, shown in Table 5, were <br />established for existing roads with respect to traffic demands <br />which are economically feasible. <br />2 Ibid, pgs. 126 -128. <br />U11 <br />V <br />