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Analysis of residual capacity for future traffic growth was also performed for the intersection. <br />Residual capacity is expressed as the percentage increase in total entering traffic beyond the existing <br />turning counts that would result in any individual leg operating at LOS E (delay greater than 35 <br />seconds). Increases in traffic flow were assumed to occur equally on all legs until one leg reached <br />LOS E. <br />The 2030 AM and PM peak hourly traffic forecasts prepared by Spack Consulting, as illustrated in <br />Figure 1, were used for this analysis. <br />OPERATIONAL ANALYSIS RESULTS <br />Ramsey Parkway and Sunwood Drive (ARCADY Analysis) <br />LOS for proposed initial roundabout configuration <br />The operational analysis was performed with the traffic forecasts provided for the interim lane <br />configuration shown in Figure 2. The overall intersection levels of service and anticipated delay with <br />a break down by approach are listed in Table 1. <br />Table 1. Ramsey Parkway & Sunwood Drive — Proposed Initial Lane Configuration <br />Peak Heir <br />Analysis <br />Condition <br />0•", erall Intersection <br />Legal of Service <br />.Average vela.,.' •_ Approach <br />SB - Driveway <br />EE - SUITWood Dr <br />NE - S WWI 0iil Dr <br />'eArE _. Ramsey Pk,.,..i•, <br />Level of <br />Service <br />.garage <br />Delay. <br />Legal of <br />Service <br />Average <br />Delay <br />Level of <br />Service <br />Average <br />Delay <br />Level of <br />Service <br />Average <br />Eela,. <br />Legal of <br />Service <br />Average <br />Dela . <br />AM <br />Calibrated <br />A. <br />4 4 <br />A <br />4 2 <br />A. <br />3 8 <br />A <br />47 <br />A. <br />4 6 <br />PM <br />Calibrated <br />A <br />69 <br />A <br />11• 11• <br />A <br />47 <br />A. <br />85 <br />.A. <br />68 <br />1 1ti . L••`_•. 20.'0 - .L v•`_r.:•, s <br />The eastbound Sunwood Drive predicted 95th percentile queue is 1 vehicles (20 feet) in the PM peak <br />period. <br />The residual capacity for the AM and PM peak hours is also listed below. <br />AM: NB congests with a 159% increase in traffic growth above the 2030 <br />traffic volumes. <br />PM: NB congests with a 39% increase in traffic growth above the 2030 <br />traffic volumes. <br />The ARCADY operational analysis data is documented in Appendix A, pages A.1.1 thru A.1.3 <br />LOS for potential ultimate roundabout configuration <br />The operational analysis was performed with the traffic forecasts provided for the ultimate lane <br />configuration shown in Figure 3. The overall intersection levels of service and anticipated delay with <br />a break down by approach are listed in Table2. <br />Ourston <br />Roundabout <br />Engineering <br />Operational Analysis <br />Ramsey Parkway & Sunwood Drive <br />Ramsey, Minnesota <br />Page 2 <br />