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2022-04-05 P & Z Packet
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2022-04-05 P & Z Packet
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Project BanjoTraffic StudyMarch 2, 2022 <br />Page 5 <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 twoways. First, consideration is given to the overall <br />intersection level of service, which takes into account the total number of vehicles entering the <br />intersection and the capability of the intersection to support the volumes. <br />Second, it is important to consider the delay on the minor approach. Since the mainline does not have <br />to stop, most 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 />The existing intersection capacity analysis shown in Table 2indicates that all study intersections <br />currently operate at an overall LOS B or better during the a.m., midday (10 to 11 a.m.),and p.m. peak <br />hours. In addition, side-streetapproachesand/or driveways operate at LOS D or better during the <br />peak hours. Peak queues within the study area are well within the existing turn lane storages <br />provided. Thus, no significant intersection capacity issues are present within the study area. Analysis <br />results showing the average delays and queue lengths is available upon request. <br />Table 2 Existing Intersection Capacity <br />Level of Service (Delay) <br />Traffic <br />Intersection <br />MiddayPeak <br />Control <br />AMPeak HourPM Peak Hour <br />Hour <br />th <br />20Avenue / Main StreetSIGNALB (16 sec)B (10 sec)B (18 sec) <br />th <br />20Avenue / Commerce DriveSSSA / B (11 sec)A / B (10 sec)A / B (11 sec) <br />th <br />20Avenue / Fairview StreetSSSA / A (1 sec)A / A (1 sec)A / A (1 sec) <br />th <br />20Avenue / Cedar StreetSSSA / B (10 sec)A / B (10 sec)A / B (11 sec) <br />st <br />21Avenue / Main StreetSIGNALA (6 sec)A (5 sec)A (8 sec) <br />st <br />21Avenue / Commerce DriveSSSA / A (9 sec)A / A (9 sec)A / A (9 sec) <br />st <br />21Avenue / Fairview StreetFUTURE <br />Main Street / I-35E West RampSIGNALA (8 sec)A (7 sec)A (8 sec) <br />Main Street / I-35E East RampSIGNALB (10 sec)A (8 sec)B (12 sec) <br />AWSC All-Way-Stop-Control SSS Side-Street-Stop <br />Note that the Main Street / I-35E interchange was reconstructed during 2010 and 2011 to increase <br />intersection and roadway capacity in anticipation of and to accommodate future development in the <br />area. The south approach at the West Ramp intersection was added as part of the project, but <br />st <br />subsequently removed in 2013 to further improve operations and safety once full access at the 21 <br />st <br />Avenue intersection was provided.TheMain Street / 21Avenue intersection was signalized in 2013. <br />st <br />21Avenue, south of Commerce Drive, was constructed in 2017. <br /> <br />
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