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<br />Dennis Welsch <br />;...1arch 24, 1997 <br />Page 14 <br /> <br />· Trip distribution from site <br /> <br />- The Ci ty of Rose\'i1le Traffic model was used to ascertain the <br />distribution of ex:,sting trips to/from the site, The resulting directionc.l <br />distribution is sh()\\-n in Figure 6. <br /> <br />· Assignment of trip!; from site <br /> <br />- Csing the model based distribution, site generated trips were 2.ssigned to <br />the study area in':ersections assuming that an equal proportion of site <br />generated trips would enter and exit the site using the three e,.isting <br />access points, This zS5umption was made giyen the possibility of <br />changes to the site Plan (Figure 7). <br /> <br />Estimation of expe.::ted 2001 turning movements giwn the de\'eloFment <br />assumptions outlined above. <br /> <br />- 2001 background forecasts turning movements based on a Y(, annual <br />growth rate were summed with the corresponding 2001 forecast site <br />generated monrnent (Figure 8). <br /> <br />The expected Year 200:. post-development ADT's on each of the rOcd\\'ays <br />surrounding the proposed de\'elopment are shov;n in Figure 9. The data <br />indicate that the forecast ,'olume on Cleveland A,'enue, between the I-33h <br />northbound ramps intE'rsection and the County Road D intersection, is <br />projected as 12,800 \'pel. <br /> <br />TRAFFIC A.r-.,;AL YSES <br /> <br />Traffic analyses were conducted for the existing, Year 2001 Background and <br />Year 2001 Post-De\'elopment time periods. Separate analyses ,,,'ere conducted <br />to determine forecast l,evels of congestion (capacity), possible traffic control <br />changes (signal warrant), impact on adjacent intersections (queuing) and <br />appropriate driveway locations (access spacing). These issues are discussed in <br />the following sections. <br /> <br />Capacity Analyses <br /> <br />A capacity analysis is an established method for determining the quality of <br />traffic flow through an intersection or along a roadway segment. Basic <br />outputs from a capacity analysis are letter grades" A" through "F" (similar to <br />a school report card), with level of service" A" (LOS 11 A") signifying little or <br />no congestion and delays and LOS "F" denoting heavy congestion with long <br />delays and traffic queues. <br /> <br />._- <br /> <br />....,- <br />