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Project BanjoTraffic Study Regional Analysis AddendumApril 22, 2022 Page 23 th 7)Long-Term: Southbound Left-Turn Lanesalong 20 Avenue the capacity analysis does not th indicate a need for southbound left-turn lanes along 20Avenue at Commerce Drive or Fairview st Steet since mostsite generated trips will use 21 Avenue to access I-35E. However, coordination with Anoka County should occur to review the analysis and study findingsand determine if these turn lanes should be incorporated from a safetyand reduced conflict perspective. TH 20AVENUE TURN LANE SENSITIVITY TEST Based on discussion with project representatives, there were concerns withbusiness impacts st associated with potential infrastructure and access changes along 21 Avenue south of Main Street; queuingand turn lane storagewere also noted as a concern. Although the capacity analysis did not indicate any major issues, an additional sensitivity test was conducted to understand how changes in development routing could impact infrastructure needs. Since the proposed development has a significant amount of control over their employee and van routing, thissensitivity testwas conducted th assuming proposed development related traffic was geo-coded/routed via 20Avenue to access the st site, as opposed to 21Avenue. The analysis focused on the 2040 Build Peak Season during the p.m. peak hour, which represents the highest traffic volume scenario evaluated. thst The change in routingshifts approximately 300 p.m. peak hour vehicles to 20 Avenue from 21 Avenue (i.e., 200 inbound and 100 outbound), via Main Street. This shift also adds about100 th southbound left-turning vehicles along 20 Avenue at Commerce Drive and Fairview Streets, respectively(assuming both Commerce Drive and Fairview Streets were allowed to be usedunder a geo-coded scenario). Although the capacity analysis shown in Table 8doesnot indicate any capacity issues from a level of services perspective, introducing 100-plus peak hour left-turning movements th would warrant constructing southbound left-turn lanes along 20Avenue at both Commerce Drive and Fairview Street(depending on the geo-coded routing desired). The specific configurationwould need to be further evaluated and include other considerations(i.e., road realignmentsand pedcrossings). Table 8 2040Build Peak Season Sensitivity Test 2040 Build Peak Season - PM Peak Hour Traffic Level of Service (Delay) Intersection Control Original RoutingGeo-Coded Routing th 20Avenue / Main StreetSIGNALC (21sec)C (25sec) th 20Avenue / Commerce DriveSSSA / B (13 sec)A / B (14 sec) th 20Avenue / Fairview StreetSSSA / B (14 sec)A / C (15 sec) st 21Avenue / Main StreetSIGNALC (27sec)C (25 sec) st 21Avenue / Commerce DriveSSSA / B (13 sec)A / B (10 sec) st Notethat the queueing issues at the 21Avenue / Main Street intersection are expected to continue, regardless of theproposed development traffic rerouting (see Table 7sensitivity test). The queues are reduced from the 2040 Build Peak Season analysis butare still expected to extend beyond the th gas station access as previously noted. The westbound left-turn lane at the 20Avenue/ Main Street intersection can accommodate the shift in volumes, but once again, the signal timing would need to be optimized. Therefore, based on this sensitivity test, the geo-controlling of employees and/or vans of the proposed development is a tool that could be leveraged to help mitigate issues, but is not considered a requirement to ensure safe and efficient transportation conditions in the area.