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YMCA Recreational Community Center Traffic Impact Analysis <br /> Table 1: Level of Service Criteria for Intersections <br /> Intersection Control Delay <br /> Level of 1 Expected (Seconds per Vehicle) <br /> Service Delay Unsignalized Signalized <br /> Intersections Intersections <br /> A Little/No Delay <10 <10 <br /> B Short Delays >10 and<15 >10 and<20 <br /> C Average Delays >15 and<25 >20 and<35 <br /> D Long Delays >25 and<35 >35 and<55 <br /> E Very Long Delays >35 and<50 >55 and<80 <br /> F Extreme Delays2 >50 >80 <br /> The acceptable level of service at City of Everett intersections is level of service D. <br /> 3. TRIP GENERATION <br /> Trip generation calculations for the proposed YMCA Recreational Community Center and the <br /> existing use to be removed are based on information contained in Trip Generation, 9th Edition <br /> (2012) by the Institute of Transportation Engineers (ITE) and City of Everett data. ITE Land Use <br /> Code 495, Recreational Community Center, has been utilized for the proposed YMCA and ITE <br /> Land Use Code 710, General Office, has been utilized for the existing office space on the site. <br /> ITE does not document the pass-by reduction for the recreational community center land use; <br /> however, Snohomish County and prior studies by GTC has documented a high number of users of <br /> health clubs are pass-by trips in the afternoon peak hour (i.e. these trips are stopping to work out <br /> on the way home or dropping off kids/picking up kids at clubs after school). Additionally,daycare <br /> and camp services that are typically associated with YMCA's also have high pass-by rates. The <br /> site is located near the interurban bike path and near Everett Transit Route 17 and close to Route <br /> 7. These facilities increase the percentage of non-motorized trips to the site. The trip generation <br /> calculations include the documented Snohomish County health club pass-by rate of 54%. This <br /> Source: Highway Capacity Manual 2010. <br /> LOS A: Free-flow traffic conditions, with minimal delay to stopped vehicles(no vehicle is delayed longer <br /> than one cycle at signalized intersection). <br /> LOS B: Generally stable traffic flow conditions. <br /> LOS C: Occasional back-ups may develop,but delay to vehicles is short term and still tolerable. <br /> LOS D: During short periods of the peak hour, delays to approaching vehicles may be substantial but are <br /> tolerable during times of less demand(i.e.vehicles delayed one cycle or less at signal). <br /> LOS E: Intersections operate at or near capacity, with long queues developing on all approaches and long <br /> delays. <br /> LOS F: Jammed conditions on all approaches with excessively long delays and vehicles unable to move at <br /> times. <br /> 2 When demand volume exceeds the capacity of the lane, extreme delays will be encountered with queuing which <br /> may cause severe congestion affecting other traffic movements in the intersection. <br /> Gibson Traffic Consultants, Inc. August 2015 <br /> info@gibsontraffic.com 4 GTC #15-118 <br />