2022-04-05 P & Z Packet - Laserfiche WebLink

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