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Ramsey Town Center Traffic Analysis Traffic Impacts Traffic impacts from the proposed project were determined by analyzing intersection operations for the future conditions. The intersection analyses were conducted for all the study area intersections using Highway Capacity Manual" procedures that report a Level of Service at each intersection. The Level of Service is a measure of average operating conditions at intersections and ranges from A through F, with each level defined by a range of control delay per vehicle. Signalized intersections and all -way stop control are analyzed for total intersection delay, while two-way stop control is analyzed only for minor approach delay. Table 2 summarizes the Level of Service Criteria. Conditions A, B, and C are considered excellent to good operating conditions with control delay per vehicle ranging up to 35 seconds for LOS C. Level of Service D is a generally acceptable standard for planning and design of urban transportation facilities. At Level of Service E, poor intersection operations occur as traffic volumes approach capacity and LOS F (Control Delay > 80 sec/veh) represents extremely congested conditions. Table 2: LOS Criteria TSignalized AWSC & TWSC Intersections Intersections Control Delay Control Delay (sec/veh) (sec/veh) A <= 10 0-10 B >10-20 >10-15 C > 20- 35 > 15- 25 D > 35- 55 > 25- 35 E > 55- 80 > 35- 50 F > 80 > 50 Source: Highway Capacity Manual 2000 For intersections operating under two-way stop control (TWSC), LOS is defined for each minor movement rather than for the intersection as a whole. Intersections operating as All -way Stop Controlled (AWSC) use the same thresholds for defining LOS. The LOS criteria for TWSC and AWSC Intersections are also shown in Table 2. Table 3 shows the results of the capacity analyses at the study area intersections for Existing conditions and for both Future scenarios. The Appendix of this report contains the capacity analysis worksheets. Existing Conditions Under existing conditions, the intersection of TH 10 and Sunfish Lake Boulevard is operating in substandard conditions (worse than LOS D) in the PM peak hour. The other intersections are operating in good conditions in both peak hours. However, the analysis of conditions at TH 10 and Ramsey and Armstrong Boulevards indicates that conditions are unstable, particularly in the PM peak hour when the Ramsey and Armstrong approaches are at LOS F and E respectively. Left turns from TH 10 are also at LOS F and E respectively at these intersections. Under these conditions, moderate increases in volumes on either Ramsey or Armstrong Boulevard or left turning from TH 10 would cause conditions to deteriorate similar to what is currently experienced at Sunfish Lake Boulevard and the intersections could quickly move into LOS E and F. " Highway Capacity Manual, Special Report 209, Transportation Research Board, Washington D.C. March 2003 Meyer. Mohaddes Associates. Inc. 15