Agenda - Council - 01/26/2021 - Laserfiche WebLink

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Chart 1— Study Corridor Volume to Capacity Congested: volume/capacity of 1.0 0 ro 0.8 U fB Q v 0.6 0 (1) 5 0.4 0 0.2 -EI HWY 10 E of HWY 10 W of Bowers Drive Llama Street Riverdale Dr Armstrong Blvd Armstrong Blvd Bowers Dr Bowers Dr btwn Llama St S of HWY 10 N N of HWY 10 N & HWY 10 S Ramps Ramps Ramps Existing 2022 No -Build 2022 Build 2040 No -Build ■ 2040 Build b. Intersection Vehicular Analysis Individual intersections can perform poorly during peak periods while the overall roadway corridor is operating with an uncongested daily volume to capacity ratio lower than 1.0. Therefore, capacity analyses are performed for the study intersections to determine if they need improvements such as turn lanes or an upgrade in traffic control. The existing and forecasted turning movement volumes along with the existing intersection configurations and traffic control were used to develop the average delay per intersection in each study scenario. The delay calculations were done in accordance with the Highway Capacity Manual, 61" Edition using the Vistro software package. The full calculations for each study scenario, including Level of Service (LOS) grades and queue lengths, are included in the Appendix. Also included in the Appendix is a guide explaining the Level of Service grade concept. Chart 2 (a.m. peak hour) and Chart 3 (p.m. peak hour) show the average peak hour delay per traffic signal -controlled intersection for each study scenario. The LOS D/E boundary of 55 seconds of delay per vehicle is considered the threshold between acceptable and unacceptable traffic signal operation in Minnesota. The initial signal timing for the existing conditions was provided by Anoka County. Traffic Impact Study 9 .#;: #) Riverstone South Development ' S P.a,,c,, ',k