CCP 10-19-1998 - Laserfiche WebLink

Home Browse Search

~l Greg Brown, BRW 09/15/98 Page 2 of3 ANALYSIS OVERVIEW . The first step in conducting the analysis involved determining the background traffic levels at the intersection of Highway 96 and Round Lake Road. Next, the potential development options for the 52 acres of undeveloped land were identified and trip generation rates for those land use possibilities were determined. Based on the land use options and existing traffic, the distribution of vehicles by approach was estimated so that additional traffic could be added to the intersection. The additional traffic from the 52 acre site was added to background volumes until the intersection reached the threshold for Level of Service D. BACKGROUND TR>\FFIC BRW calculated the amount of additional development that can be accommodated by intersection of Round Lake Road and Highway 96 for two background traffic conditions. The first background traffic condition is based on existing PM peak hour traffic volumes counted in February 1998 plus traffic from the approved Gateway Business Center. The second background tramc condition is based on year 2020 tramc forecasts for Highway 96 which includes the traffic from the approved Gateway Business Center. Figure 1 displays the PM peak hour tramc levels for both background traffic conditions. TRIP GENER>\ nON RATES BY LAND USE Based on CLlrrent zoning covering the site location, it is expected that any additional site development(s) would be either office or office/sho\\Toom developments. The following PM peak hour trip generation rates . for each development were estimated using the ITE Trip Generation Manual: Sixth Edition: . General Office - 1.49 trips per 1000 square feet of gross floor area . Office/Showroom - 1.00 trips per 1000 square feet of gross floor area APPROACH DISTRI13UTlO:'\ Based on the existing tranic count of the Round Lake Road and Highway 96 intersection, it was determined that 65% of the \'ehicks turning onto/from Round Lake Road would be arriving from/departing to the west towards 1-35\V The remaining 35% \vould be arriving from/departing to the east. Because the land development options identified were office or office/sho\\Toom, it was assumed that of the traffic generated by this new development, 83% would be leaving the site and 17% would be entering the site. CAPACITY A]';ALYSIS A capacity analysis is an established method of objectivcly measuring the quality of traffic operations through an intersection or along a segment 01" road\\ay. The basic output for these analyses are letter grades (^ through F), \\'ilh Ie\'e! ol"sclTicc (LOS) ^ denoting c.\cellent operations or under capacity conditions and LOS F signifying congested or over capacity for urban intersection design. LOS D is considered the mininlllm acceptable quality of tramc flow; and LOS E is considered to be the actual capacity of the . intersection. Based on previous studies, LOS D has been selected as the appropriate design level of service for the intersections in our study area.