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Josh Nyquist,Executive Director of Building Operations May 26,2022 <br /> PACT Charter School I Traffic Impact Study Page 6 <br /> For side-street stop-controlled intersections, special emphasis is given to providing an estimate for the <br /> level of service of the side-street approach.Traffic operations at an unsignalized intersection with side- <br /> street stop control can be described in two ways.First,consideration is given to the overall intersection <br /> level of service.This considers the total number of vehicles entering the intersection and the capability <br /> of the intersection to support these volumes. <br /> Second,it is important to consider delay on the minor approach. Since mainline traffic does not stop, <br /> most of the delay is attributed to the side-street approaches. It is typical of intersections with higher <br /> mainline traffic volumes to experience high levels of delay (i.e. poor levels of service) on the side- <br /> street approaches, but an acceptable overall intersection level of service during peak hour conditions. <br /> Table 2. Level of Service Criteria for Signalized and Unsignalized Intersections <br /> LOS Designation Signalized Intersection Unsignalized Intersection <br /> Average Delay/Vehicle(seconds) Average Delay/Vehicle(seconds) <br /> A <_ 10 <_ 10 <br /> B > 10-20 > 10- 15 <br /> C > 20-35 > 15-25 <br /> D >35-55 > 25-35 <br /> E >55 -80 >35 - 50 <br /> F >80 >50 <br /> Results of the existing weekday traffic operations analysis, shown in Table 3, indicate that all study <br /> intersections currently operate at an acceptable overall LOS B or better during the a.m. commuter <br /> (school arrival) peak hour (7:30-8:30 a.m.), school dismissal peak hour (2:30-3:30 p.m.) and p.m. <br /> commuter peak hour (4:00-5:00 p.m.), under existing traffic control and intersection geometrics. No <br /> significant queuing or delay issues were identified, except for the Armstrong Boulevard/Alpine Drive <br /> intersection where the westbound approach is operating at a LOS E during the p.m. peak hour. The <br /> future conversion of Armstrong Boulevard/Alpine Drive to a single-lane roundabout will improve <br /> the operations and all approaches will operate at a LOS A during the peak hours. <br /> The existing Sunday a.m. church peak hour traffic operations analysis related to the adjacent future <br /> proposed St. Katharine Drexel Church will be combined with year 2028 No-Build and Build scenario <br /> Sunday a.m. church peak hour traffic operations analyses later in this memorandum. <br />